DETA (Diethylenetriamine)   Appearance: Colorless to pale yellow transparent liquidChemical formula: C₄H₁₃N₃Molecular weight: 103.166CAS No.: 111-40-0Melting point: -40 °CBoiling point: 206 °CDensity: 0.96 g/cm³Amine value (mg KOH/g): 1300–1400Viscosity (25 °C) mPa·s: 5–20Mixing ratio: YLE-128 (E-51) epoxy resin : DETA (Diethylenetriamine) = 100 g : 10–11 g (by weight) YLE-220 (E-44) epoxy resin : DETA (Diethylenetriamine) = 100 g : 10 g (by weight)Curing conditions: 25 °C / 3–6 hours or 60 °C / 1–2 hours   TETA (Triethylenetetramine)   Appearance: Colorless to slightly yellow viscous liquidChemical formula: C₆H₁₈N₄Molecular weight: 146.234CAS No.: 112-24-3Melting point: 12 °CBoiling point: 266–267 °CDensity: 0.982 g/cm³Flash point: 135 °C (CC)Amine value (mg KOH/g): 1100–1200Viscosity (25 °C) mPa·s: 5–30Mixing ratio: YLE-128 (E-51) epoxy resin : TETA (triethylenetetramine) = 100 g : 13–14 g (by weight) YLE-220 (E-44) epoxy resin : TETA (triethylenetetramine) = 100 g : 11–13 g (by weight)Curing conditions: 25 °C / 3–6 hours or 60 °C / 1–2 hours   Polyether amine curing agent Chemical name: Polyether amine; Polyether polyamine; Polyetheramine (PEA); Aliases: Polypropylene glycol bis(2-aminopropyl ether); 2-(Aminooxy)propan-1-amineCAS No.: 9046-10-0   Polyether amine curing agent D-230 Mixing ratio: YLE-128 (E-51) epoxy resin : D-230 = 100 g : 30 gCuring conditions: 25 °C / 36 hours or 60 °C / 3 hours or 80 °C / 1 hourCured product characteristics: Colorless and transparent, high hardness, high toughness, not easily brittle. Suitable for handicrafts, nameplates, and potting applications with special requirements.   Polyether amine curing agent D-400 Mixing ratio: YLE-128 (E-51) epoxy resin : D-400 = 100 g : 50 gCharacteristics: Good toughness after curing, low viscosity, high mechanical performance of the cured product, and resistance to high-low temperature thermal shock (-35 °C to 120 °C).   Polyether amine curing agent D-2000 Mixing ratio: YLE-128 (E-51) epoxy resin : D-2000 = 40 g : 100 gCuring conditions: 80 °C / 6–10 hoursCharacteristics: D-2000 is colorless and transparent. The cured product exhibits excellent elasticity, high peel strength, colorless transparency, high toughness, not easily brittle, and strong adhesion. Suitable for potting applications with special requirements, and resistance to high-low temperature thermal shock (-40 °C to 130 °C). When combined with liquid epoxy resin, D-2000 is used for colorless and transparent applications in composites, wind power, handicrafts, and nameplates. TYPE D-230 D-400 T403 D-2000 D-5000 Appearance Colorless transparent liquid Colorless transparent liquid Colorless transparent liquid Colorless transparent liquid Colorless transparent liquid Viscosity (MPa·s / 25℃) 3~10 10~50 500~200 260~280 300~600 Density (25℃, g/cm³) 0.92~0.98 0.92~0.98 0.92~0.98 0.92~0.98 0.92~0.98 Active Hydrogen Equivalent 58 100 85 500 1250 Film Drying Time (25℃) 36 hours 72 hours 24 hours 100 hours 500 hours Recommended Mixing Ratio (with E51) 10g : 3g 10g : 5g 10g : 4.5g 10g : 25g 10g : 65g Pot Life (Min / 25℃) ≥3 hours ≥6 hours ≥4 hours ≥24 hours ≥48 hours Curing Conditions 80°C / 6~10 hrs 80°C / 6~10 hrs 80°C / 6~10 hrs 80°C / 6~10 hrs 80°C / 6~10 hrs Cured Hardness (Shore) 90D 65D 85D D20 --     1,3-BAC (1,3-Bis(aminomethyl)cyclohexane)  CAS No.: 2579-20-6 13-BAC is primarily used as an epoxy curing agent or for the preparation of modified epoxy curing agents. Compared to aromatic amine curing agents, it not only has lower viscosity and better handling properties but also yields cured products with outstanding resistance to ultraviolet light (anti-yellowing), as well as excellent weather resistance, temperature resistance, water resistance, and chemical resistance. Moreover, it cures rapidly and can be used for curing at either room temperature or low temperatures. It is widely applied in high-end outdoor floor coatings, stone adhesives, electronic potting compounds, composite materials (such as automotive parts and wind turbine blades), and in the fields of jewelry adhesives and crystal adhesives where appearance and color quality are of paramount importance.Mixing ratio: YLE-128 (E-51) epoxy resin : 1,3-BAC = 100 g : 18–20 gCuring conditions: 25 °C / 6–12 hours   MXDA (m-Xylylenediamine)  CAS No.: 1477-55-0Characteristics: m-Xylylenediamine is a high-performance and widely used epoxy resin curing agent, and also an important fine chemical intermediate. It can be used in the synthesis of polyurethanes, a range of epoxy resins, rubber additives, photosensitive plastics, pesticides, fiber finishing agents, rust inhibitors, chelating agents, lubricants, paper processing agents, and electronic chemicals. In nylon products such as MXD6 (a polycondensate of MXDA and adipic acid), and in the synthesis of functional epoxy resins, MXDA is widely utilized due to its unique structure, which imparts various excellent physical and chemical properties.Mixing ratio: YLE-128 (E-51) epoxy resin : MXDA = 100 g : 18–20 gCuring conditions: 50–60 °C / 3 hours + 120–150 °C / 2 hours   DETDA (Diethyltoluenediamine)  CAS No.: 68479-98-1Characteristics: DETDA is equivalent to Ethancure 100 and Lonza DETDA 80. It is a highly effective chain extender for polyurethane elastomers, and can also be used as a curing agent for polyurethanes and epoxy resins, as an antioxidant for epoxy resins, and in industrial oils and lubricants. Additionally, it serves as an intermediate for organic synthesis.Mixing ratio: YLE-128 (E-51) epoxy resin : DETDA = 100 g : 25 gCuring conditions: 100 °C / 4 hours + 150 °C / 1 hour   PACM: 4,4'-Diaminodicyclohexylmethane CAS No.: 1761-71-3PACM curing agent (hydrogenated MDA) has performance equivalent to Air Products' Amicure PACM and BASF's DC (i.e., Baxxodur EC330). It is used as an epoxy resin curing agent and as a curing agent for epoxy composite materials. It is also applied as a chain extender and additive in polyaspartic esters, polyamides (PA), polyurethanes (PU), and polyurea spray elastomers (SPUA). Application fields include high-grade composites, filament winding, lamination, casting, RIM, pultrusion, etc.Mixing ratio: YLE-128 (E-51) epoxy resin : PACM = 100 g : 25–30 gCuring conditions: 25 °C / 24 hours or 60 °C / 3 hours   DDS: 4,4'-Diaminodiphenyl sulfone CAS No.: 80-08-04,4'-Diaminodiphenyl sulfone is an epoxy resin curing agent with excellent high-temperature resistance. It is used in high-temperature-resistant prepregs, high-temperature-resistant molded products (automotive molds, rail transit, aerospace, etc.), and high-temperature-resistant laminates.Mixing ratio: YLE-128 (E-51) epoxy resin : DDS = 100 g : 25–35 gCuring conditions: 130 °C / 2 h + 200 °C / 2 h   DDM: 4,4'-Diaminodiphenylmethane CAS No.: 101-77-9Liquid DDM product is a mixture containing approximately 60% 4,4'-diaminodiphenylmethane and 40% polyphenyl polymethylene polyamine, appearing as a light yellow viscous liquid at room temperature. DDM is an important chemical intermediate. In addition to being primarily used in the production of MDI and HMDI, it is also extensively used in the preparation of polyimide (PI) insulating varnishes, polyesterimide (PEI) insulating varnishes, bismaleimide resins, and other electrical insulation materials. It can also be used as a curing agent for epoxy resins and as a chain extender for polyurethane elastomers.Mixing ratio: YLE-128 (E-51) epoxy resin : liquid DDM = 100 g : 30–35 g (flexible)Curing conditions: 80 °C / 3–4 hours

1,2-Diaminocyclohexane (1,2-DACH), with the chemical formula C₆H₁₄N₂, is an important alicyclic diamine compound. At ambient temperature, it appears as a colorless to pale yellow transparent liquid with an ammonia-like odor. As the hydrogenation product of o-phenylenediamine, it exists in two geometric isomeric forms, cis and trans. Owing to the chair conformation of the cyclohexane ring, the trans isomer further comprises a pair of enantiomers. 1,2-Diaminocyclohexane exhibits excellent chemical stability and reactivity, and is widely used in epoxy resin curing agents, pharmaceutical intermediates (e.g., in the synthesis of oxaliplatin), agrochemicals, dyes, and the preparation of high-performance polymers. With the advancement of the domestic production of adiponitrile, the supply of 1,2-diaminocyclohexane as a by-product has become increasingly abundant, further broadening its application prospects.   General Information Item Details Chemical name 1,2-Diaminocyclohexane CAS No. 694-83-7 Synonyms 1,2-Diaminocyclohexane, 1,2-DACH Applications Chemical industry, pharmaceuticals, agrochemicals     Physical Properties At ambient temperature, 1,2-diaminocyclohexane is a clear, colorless to pale yellow transparent liquid with a faint ammonia-like odor. Its relative density is approximately 0.931 g/cm³, with a melting point range of 41–45 °C, a boiling point of 188–192 °C, and a flash point of 76 °C. The compound is sensitive to air; prolonged exposure may lead to oxidation and yellowing of the product. It is readily soluble in water and also soluble in organic solvents such as ethanol.     Chemical Properties The molecule of 1,2-diaminocyclohexane contains two primary amino groups, conferring typical aliphatic amine chemical properties, including basicity and nucleophilicity. Due to the adjacent positioning of the two amino groups (at the 1,2-positions), it exhibits unique coordination capability, forming stable chelates with various metal ions. The compound displays stereoisomerism, existing predominantly in cis and trans configurations. In the cis isomer, the two amino groups are oriented on the same side of the cyclohexane ring plane; in the trans isomer, they are on opposite sides. The trans-1,2-diaminocyclohexane, being chiral, exists as a pair of enantiomers, (1R,2R) and (1S,2S), among which (1R,2R)-(-)-1,2-DACH is of significant value in pharmaceutical synthesis.     Preparation Methods Hydrogenation of o-Phenylenediamine The industrial production of 1,2-diaminocyclohexane is primarily achieved via the catalytic hydrogenation of o-phenylenediamine. The reaction is typically carried out in an autoclave or a trickle-bed reactor using metal catalysts such as ruthenium (Ru) or nickel (Ni). During the process, the benzene ring of o-phenylenediamine is saturated to yield 1,2-diaminocyclohexane. The ratio of cis to trans isomers in the product can be controlled by adjusting reaction conditions, including temperature, pressure, and catalyst type.   Co-production Process In the hydrogenation of adiponitrile to produce hexamethylenediamine, certain amounts of specialty amines such as 1,2-diaminocyclohexane and cyclohexylimine are generated as by-products. With the commissioning of domestic adiponitrile production facilities, this co-production route has become an important source of 1,2-diaminocyclohexane, contributing to cost reduction and improved resource utilization.   Applications Epoxy Resin Curing 1,2-Diaminocyclohexane is a novel and highly efficient curing agent for epoxy resins. It features low dosage requirements, cost-effectiveness, and rapid curing speed. Epoxy resins cured with 1,2-diaminocyclohexane exhibit excellent chemical resistance, heat resistance, and mechanical properties, and are widely used in wind power structural adhesives, electronic encapsulation materials, and high-performance coatings.   Pharmaceutical Synthesis In the pharmaceutical field, 1,2-diaminocyclohexane serves as a key intermediate in the synthesis of various drugs. In particular, (1R,2R)-(-)-1,2-diaminocyclohexane is a critical ligand precursor for the anticancer drug oxaliplatin. Additionally, it is employed in the synthesis of other biologically active heterocyclic compounds.   Other Applications 1,2-Diaminocyclohexane is also utilized in the synthesis of various agrochemicals and dyes. In the agrochemical sector, it serves as an intermediate in the synthesis of carbamate herbicides and other heterocyclic fungicides. In the dye industry, it is used in the preparation of specific azo dyes and functional auxiliaries. As a monomer or chain extender, 1,2-diaminocyclohexane can also be used in the preparation of high-performance polymers such as polyamides and polyurethanes, with its alicyclic structure imparting excellent weatherability and anti-yellowing properties to the resulting polymers.

    Aliphatic Polyamines Diethylenetriamine (DETA) – Aliphatic polyamine; ambient-temperature epoxy curing agent used in flooring, anticorrosion, and adhesion applications. Features high reactivity and low viscosity. Triethylenetetramine (TETA) – Polyethylene polyamine; epoxy curing agent with excellent chemical resistance, widely used in heavy-duty anticorrosion and composite materials. Tetraethylenepentamine (TEPA) – Highly reactive polyamine; used in epoxy curing, ion-exchange resins, and as a raw material for oilfield auxiliaries. Pentaethylenehexamine (PEHA) – High-amino polyamine; applied in epoxy curing, chelating agents, and water treatment chemicals. 1,6-Hexamethylenediamine (HMDA) – Aliphatic diamine; used in nylon 66, polyurethanes, and epoxy curing agents to enhance heat resistance and hardness. 1,2-Cyclohexanediamine (CHDA) – Cycloaliphatic diamine; high-temperature epoxy curing agent offering yellowing resistance, high gloss, and high mechanical strength. Isophoronediamine (IPDA) – Cycloaliphatic diamine; weather-resistant epoxy curing agent with low yellowing tendency, used in topcoats and anticorrosion coatings. Bis(4-aminocyclohexyl)methane (PACM/DACM) – Cycloaliphatic diamine; offers high heat resistance and low moisture absorption; used in epoxy, polyamide, and PU curing. 2-Methylpentamethylenediamine (MPMD) – Modified aliphatic diamine; low viscosity and low volatility; used in epoxy flooring and fast-cure systems. 3,3'-Dimethyl-4,4'-diaminodicyclohexylmethane (MACM) – Cycloaliphatic modified diamine; low viscosity and high toughness; applied in epoxy composites and LED encapsulation.   Aromatic Amines m-Phenylenediamine (m-PDA) – Aromatic diamine; used in high-temperature epoxy curing, polyimides, and aramid fiber production; offers high heat resistance. p-Phenylenediamine (p-PDA) – Aromatic diamine; used in high-temperature-resistant resins, epoxy curing, and dye intermediates. 4,4'-Diaminodiphenylmethane (DDM) – Aromatic diamine; high-temperature epoxy curing agent providing high Tg, high heat resistance, and high strength. 4,4'-Diaminodiphenylsulfone (DDS) – Highly heat-resistant aromatic amine; used in aerospace epoxy, electronic potting, and heat-resistant structural adhesives. m-Xylylenediamine (MXDA) – Aromatic-aliphatic mixed diamine; low toxicity and high adhesion; used in epoxy, nylon, and coatings. Diethyltoluenediamine (DETDA) – Aromatic diamine; PU chain extender and epoxy curing agent with fast reaction and high elasticity. 3,5-Dimethylthio-2,4-toluenediamine (DMTDA) – Low-temperature-active aromatic diamine; used in PU elastomers, adhesives, and CASE applications. 4,4'-Methylenebis(3-chloro-2,6-diethylaniline) (MCDEA) – Sterically hindered aromatic diamine; slow-reacting PU chain extender offering high resilience and abrasion resistance.   Modified Amines / Polyamidoamines Polyamide 650 – Condensate of dimer acid and polyamine; low toxicity and good toughness; general-purpose epoxy curing agent. Polyamide 651 – High-viscosity polyamide; enhances adhesion and flexibility; used in anticorrosion coatings and marine paints. Low-Molecular-Weight Polyamide Curing Agent (300#) – Fast-drying and low-volatility; used in flooring, self-leveling compounds, and adhesives. Modified Cycloaliphatic Amine Curing Agent (EH-260) – Modified IPDA type; low viscosity, weather resistance, and high gloss; used in topcoat systems. Phenalkamine (T-31) – Phenol-formaldehyde-polyamine condensate; cures at low temperature and under damp conditions; used in underground engineering and anticorrosion. Modified Phenalkamine (T-33) – High-solid, low-odor; suitable for winter construction and damp-surface curing. Mannich Base Modified Polyamine (EH-36) – High activity and water resistance; used in underwater curing and heavy-duty steel anticorrosion. Polyetheramine D230 – Polyether diamine; low viscosity and high toughness; used in epoxy flooring and lightweight composites. Polyetheramine D400 – Good flexibility and low moisture absorption; used in adhesives, composites, and decorative coatings. Polyetheramine D2000 – Long-chain flexible diamine; enhances impact resistance and toughness; used in PU and epoxy toughening. Polyetheramine T403 – Trifunctional polyether amine; high crosslinking density; used in structural adhesives and wear-resistant flooring. Polyetheramine T5000 – Ultra-flexible triamine; used in high-elasticity systems, adhesives, and elastic coatings.   Tertiary Amines / Accelerators / Functional Amines Triethanolamine (TEA) – Tertiary amine; used as neutralizer, emulsifier, cement grinding aid, and PU catalyst. Diethanolamine (DEA) – Alkanolamine; used in desulfurization, emulsification, PU chain extension, and as a pH regulator in coatings. Monoethanolamine (MEA) – Basic absorbent, neutralizer; used in metalworking fluids and as a surfactant raw material. N,N-Dimethylethanolamine (DMEA) – Tertiary amine catalyst; used in PU foaming, epoxy acceleration, and aqueous neutralization. N,N-Dimethylbenzylamine (BDMA) – Tertiary amine accelerator; used in fast epoxy curing, casting, and electronic potting. 2,4,6-Tris(dimethylaminomethyl)phenol (DMP-30) – Tertiary amine accelerator; significantly increases epoxy curing speed; suitable for low-temperature applications. Triethylenediamine (DABCO) – Tertiary amine; PU foaming catalyst and gel catalyst; used in sponge and rigid foams. N-Methylmorpholine (NMM) – Cyclic tertiary amine; used as PU catalyst, solvent, and organic synthesis base. N-Ethylmorpholine (NEM) – Basic catalyst; used in polyurethane foaming and coating auxiliaries. 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) – Superbase catalyst; used in epoxy, polyurethane, and resin synthesis catalysis.   Specialty Amines / Functional Monomers N-Aminoethylpiperazine (AEP) – Polyamine; used as epoxy curing agent, intermediate, lubricant, and chelating agent. Piperazine (PIP) – Cyclic diamine; used in pharmaceutical intermediates, polyurethanes, epoxy curing, and desulfurization agents. N,N'-Di-sec-butyl-p-phenylenediamine (DBPD) – Antioxidant/antiozonant amine; used in rubber, plastics, and oil products for antioxidation and anti-aging. Octyl/Dibutyl Diphenylamine Compound (ODPA/BDPA) – High-temperature antioxidant amine; used in lubricating oils, transformer oils, and industrial oils. 3-Methoxypropylamine (MOPA) – Alkoxy monoamine; low viscosity and low volatility; used in waterborne resins and epoxy auxiliaries. N-(3-Aminopropyl)imidazole (API) – Imidazole-modified amine; used in medium-temperature epoxy curing, adhesives, and copper-clad laminates. 2-Methylimidazole-Modified Amine (2MZ Curing Agent) – Imidazole adduct; used in epoxy powder coatings, electronic encapsulation, and latent curing. Quaternary Ammonium-Type Cationic Amines (1831, 1227 series) – Cationic surfactants; used as bactericides, softeners, antistatic agents, and emulsifiers. Fatty Amine Polyoxyethylene Ethers (C12-amine EO5, C18-amine EO10) – Nonionic surfactants; used in emulsification, dispersion, wetting, and pesticide adjuvants. Trioctylmethylammonium Chloride (TOMAC) – Quaternary ammonium phase-transfer catalyst; used in organic synthesis, extraction, and phase-transfer catalysis.

Physicochemical Properties N,N-Dimethylaniline (abbreviated as DMA), also known as dimethylphenylamine, has the molecular formula C₆H₅N(CH₃)₂ and a molecular weight of 121. It is a pale yellow oily liquid with a melting point of 2.45 °C, a boiling point of 194 °C, a flash point of 62.8 °C, and a relative density of 0.9557 (20/4 °C). It is sparingly soluble in water but soluble in methanol, ethanol, propanol, chloroform, diethyl ether, and aromatic organic solvents.   Chemical Properties N,N-Dimethylaniline exhibits weak basicity and reacts with picric acid to form a picrate salt with a melting point of 163–164 °C. It reacts with alkyl halides to yield quaternary ammonium salts. Upon reduction, it can yield dihydro-N,N-dimethylaniline or tetrahydro-N,N-dimethylaniline, depending on the reaction conditions. Hydrogenation using palladium as a catalyst yields cyclohexanone and dimethylamine. N,N-Dimethylaniline is readily oxidized; oxidation with potassium permanganate or with concentrated sulfuric acid at 190–200 °C yields tetramethylbenzidine. Oxidation with manganese dioxide in chloroform yields N-formylmethylaniline. Oxidation with neutral hydrogen peroxide or peracids yields dimethylaniline oxide [C₆H₅N(CH₃)₂O]. When reacted with acylating agents, the methyl groups are substituted by acyl groups. Reaction with tetranitromethane in pyridine results in nitrosation of the methyl group rather than substitution on the benzene ring. Halogenation, nitration, and sulfonation reactions occur at the ortho and para positions, while nitrosation, coupling, and Friedel–Crafts reactions take place at the para position.   Toxicology N,N-Dimethylaniline is highly toxic, with toxicity similar to that of aniline. It can cause poisoning via inhalation of its vapor or absorption through the skin. It exhibits hematotoxicity, neurotoxicity, and carcinogenic potential. The maximum allowable concentration in air is 5 ppm. Contact with skin should be avoided. Adequate ventilation and closed equipment are required at the worksite, and operators must wear appropriate protective equipment.   Its toxicity resembles that of aniline, suppressing the central nervous and circulatory systems, and causing headaches, weakness, local or systemic hypoxia, cyanosis of the skin and mucous membranes, dizziness, and respiratory distress. It can be absorbed through the skin, causing poisoning. Upon skin contact, immediately wash thoroughly with concentrated soapy water. The odor threshold concentration is 0.024 mg/m³. According to Chinese standard TJ 36-79, the maximum allowable concentration in workshop air is 5 mg/m³. Stability ：Stable Incompatible Materials：Acids, acid anhydrides, acyl chlorides, chloroform, halogens Conditions to Avoid Heat Hazardous Polymerization ：Will not occur   The physicochemical properties of High-purity N,N-dimethylaniline are relatively stable, making it a fundamental organic raw material for the synthesis of fine chemical intermediates used in pharmaceuticals, pesticides, dyes, pigments, and other products.   Main Applications As a fundamental organic raw material for the synthesis of fine chemical intermediates, N,N-dimethylaniline has a wide range of applications. It serves as a major dye intermediate for manufacturing triphenylmethane (basic) dyes, including Basic Yellow, Basic Violet 5BN, Basic Green, Victoria Blue BB, Basic Brilliant Blue R, Cationic Red BL, Brilliant Red 5GN, Violet 3BL, and Brilliant Blue. In the pharmaceutical industry, it is used in the production of cephalosporin V, sulfamonomethoxine, and sulfadoxine. In the fragrance industry, it is used to produce vanillin and other aromatic aldehydes. Additionally, it is used as a solvent, a rubber vulcanization accelerator, and a stabilizer for explosives.   (1) N,N-Dimethylaniline is one of the basic raw materials for producing basic dyes (triphenylmethane dyes, etc.) and other basic dyes. Major products include Basic Yellow, Basic Violet 5BN, Basic Green, Victoria Blue, Brilliant Red 5GN, and Brilliant Blue. In the pharmaceutical industry, it is used to manufacture cephalosporin V, sulfamonomethoxine, sulfadoxine, and flucytosine. In the fragrance industry, it is used to produce vanillin. (2) It is employed as a solvent, a metal corrosion inhibitor, an epoxy resin curing agent, a curing accelerator for polyester resins, and a co-catalyst for the polymerization of vinyl compounds. It is also used in the preparation of basic triphenylmethane dyes, azo dyes, and vanillin. (3) In combination with organotin compounds, it is used as a catalyst for the production of polyurethane foam. It also serves as a rubber vulcanization accelerator and a raw material for explosives and pharmaceuticals. It is one of the basic raw materials for producing basic dyes (triphenylmethane dyes, etc.) and other basic dyes, including Basic Yellow, Basic Violet 5BN, Basic Green, Victoria Blue, Brilliant Red 5GN, and Brilliant Blue. N,N-Dimethylaniline is also a raw material for the manufacture of dozens of pharmaceuticals and pharmaceutical intermediates, including cephalosporin V, sulfadimethoxine, sulfamethoxazole, sulfamonomethoxine, sulfadoxine, and flucytosine. (4) It is used as a curing accelerator for epoxy resins, polyester resins, and anaerobic adhesives, enabling rapid curing of anaerobic adhesives. It can also be used as a solvent, a co-catalyst for polymerization of vinyl compounds, a metal corrosion inhibitor, a UV absorber for cosmetics, and a photosensitizer. Additionally, it is used as a raw material for manufacturing basic dyes, disperse dyes, acid dyes, oil-soluble dyes, and fragrances (e.g., vanillin). (5) It is used as a reagent for the spectrophotometric determination of nitrite. It is also employed as a solvent and in organic synthesis. (6) It is utilized as a dye intermediate, solvent, stabilizer, and analytical reagent.

N,N-Dimethylaniline (chemical formula: C₈H₁₁N) is an important organic chemical raw material belonging to the class of aromatic amine compounds. It is the product of substituting both hydrogen atoms on the amino group of aniline with methyl groups. At room temperature, N,N-dimethylaniline appears as a pale yellow to light brown oily liquid with a characteristic pungent, irritating odor. It is sparingly soluble in water but miscible with ethanol, diethyl ether, chloroform, and aromatic organic solvents.   As a key intermediate, N,N-dimethylaniline finds extensive applications in the dye, pharmaceutical, pesticide, fragrance, and rubber industries. In the dye industry, it serves as a crucial raw material for synthesizing triphenylmethane dyes (e.g., Basic Green, Victoria Blue) and azo dyes. In the pharmaceutical industry, it is used in the synthesis of various drugs, including cephalosporin V and sulfonamides. Additionally, it is utilized as a solvent, an epoxy resin curing agent, and a rubber vulcanization accelerator. Due to its high toxicity and classification as a suspected carcinogen, strict adherence to safety protection protocols is mandatory during its production and use.   Basic Information Chemical Name N,N-Dimethylaniline CAS NO. 121-69-7 Synonyms Dimethylaniline, Dimethylaminobenzene, N,N-Xylidine Application  Fields Dyes, Pharmaceuticals, Pesticides, Rubber     Discovery Background and Evolution The discovery of N,N-dimethylaniline is closely tied to the dye industry revolution of the late 19th and early 20th centuries. In 1876, while working at BASF, German chemist Heinrich Caro investigated the synthesis of Methylene Blue, which involved reactions with N,N-dimethylaniline and its derivatives. Methylene Blue was the world's first synthetic phenothiazine dye, and its synthesis utilized 4-aminodimethylaniline, marking the beginning of N,N-dimethylaniline's role as a vital chemical raw material.   With the vigorous growth of the dye industry, the demand for N,N-dimethylaniline increased dramatically. Early synthesis methods primarily involved the high-temperature, high-pressure condensation reaction of aniline with methanol in the presence of sulfuric acid. With technological advancements, gas-phase catalytic methods and continuous production processes using solid acid catalysts have gradually replaced traditional batch-wise liquid-phase methods, improving production efficiency and product purity. Currently, China has made significant progress in the production technology of N,N-dimethylaniline, though continuous improvements in product quality and environmental standards are still ongoing.     Physical and Chemical Properties N,N-Dimethylaniline is a colorless to pale yellow transparent oily liquid at room temperature; it can oxidize and turn reddish-brown upon prolonged exposure or under light. Its melting point ranges from 1.5 to 2.5 °C, and its boiling point is 193.1 °C. The substance has a density of approximately 0.96 g/cm³, making it lighter than water. It is sparingly soluble in water (solubility approx. 1 g/L at 20 °C) but miscible with many organic solvents such as ethanol, diethyl ether, chloroform, and benzene. It exhibits weak basicity; the pH of a 10% aqueous solution is approximately 7.49.   N,N-Dimethylaniline displays typical aromatic amine properties. Due to the two methyl groups attached to the nitrogen atom, its basicity is stronger than that of aniline but weaker than that of aliphatic amines. It is readily oxidized and gradually darkens in color upon exposure to air or sunlight. As a nucleophile, it can undergo N-methylation or C-methylation reactions. Although its basicity is weak, making diazotization difficult, it can proceed under strongly acidic conditions; reaction with sodium nitrite in acidic media yields nitroso compounds, which turn emerald green under alkaline conditions. Furthermore, it serves as an excellent coupling component, reacting with diazonium salts to form azo dyes. It can also undergo substitution reactions such as halogenation, nitration, and sulfonation, typically occurring at the para position relative to the amino group.     Preparation Methods Industrially, N,N-dimethylaniline is primarily produced via the methylation of aniline. The most common method involves reacting aniline and methanol in the presence of a catalyst, such as sulfuric acid or solid acids (e.g., SO₄²⁻/ZrO₂). The reaction is typically carried out at high temperature and pressure, yielding a mixture of N-methylaniline and N,N-dimethylaniline, from which the high-purity product is obtained through distillation separation. Additionally, continuous methylation of methanol and aniline can be achieved using a fixed-bed reactor with a copper-zinc-based catalyst, a method characterized by high conversion rates and good selectivity.   Application Areas Dye IndustryN,N-Dimethylaniline is a vital intermediate in the dye industry. It is widely used to synthesize triphenylmethane basic dyes such as Basic Green, Victoria Blue, Basic Yellow, and Basic Violet 5BN. These dyes are extensively used for dyeing cotton, linen, and viscose fibers, as well as for coloring paper and leather. It is also used in the synthesis of azo dyes and indicators like Methyl Orange. In the fragrance industry, it is an important raw material for producing vanillin and other aroma compounds.   Pharmaceutical IndustryIn the pharmaceutical field, N,N-dimethylaniline is used to synthesize various drugs. It is a key raw material for the synthesis of the antibiotic cephalosporin V. Additionally, it is used in the synthesis of sulfonamide drugs, such as sulfadoxine and sulfadimethoxine. Beyond the mentioned drugs, it is also used in the synthesis of other pharmaceuticals like flucytosine.   Materials and Other ApplicationsIn the pesticide sector, N,N-dimethylaniline is used to synthesize key intermediates for sulfonylurea herbicides. In the rubber industry, it serves as a vulcanization accelerator, helping to improve vulcanization speed and rubber properties. In the materials industry, it can be used as a curing accelerator for epoxy resins and unsaturated polyester resins, as well as a catalyst for polyurethane foam.     Safety Information Toxicological DataN,N-Dimethylaniline is highly toxic, with toxicity similar to but slightly weaker than that of aniline. The oral LD₅₀ in rats is 1410 mg/kg, and the dermal LD₅₀ in rabbits is 1770 mg/kg. Inhalation of its vapor or absorption through the skin can cause poisoning. Its primary targets are the blood and nervous systems, leading to methemoglobinemia, which manifests as cyanosis (bluish discoloration of skin and mucous membranes), headache, dizziness, nausea, and other symptoms. In 2017, the International Agency for Research on Cancer (IARC) of the World Health Organization classified it as Group 3 carcinogen, indicating inadequate evidence for carcinogenicity in humans but sufficient evidence in experimental animals.   First Aid and ProtectionUpon skin contact with N,N-dimethylaniline, immediately remove contaminated clothing and wash the skin thoroughly with soap and water. In case of eye contact, rinse immediately with plenty of flowing water or saline for several minutes, lifting the eyelids occasionally. If inhaled, move the affected person to fresh air immediately, keep the airway open, and administer oxygen if breathing is difficult. If swallowed, rinse the mouth, drink plenty of warm water, induce vomiting, perform gastric lavage, administer activated charcoal, and seek immediate medical attention. During handling, wear self-priming filter-type respirators (half-face masks), chemical safety goggles, impervious work clothing, and rubber oil-resistant gloves. Maintain adequate ventilation in the workplace and keep equipment closed.   Environmental HazardsN,N-Dimethylaniline is toxic to aquatic life and may cause long-term adverse effects in the aquatic environment. Its vapor can form explosive mixtures with air and is highly flammable upon exposure to open flames or high heat. Therefore, its release into the environment must be strictly controlled. In case of a spill, absorb the material with sand or inert material and dispose of it in a harmless manner.

Yolatech's m-Xylylenediamine (MXDA, CAS No.: 1477-55-0), also known as 1,3-benzenedimethanamine, is an epoxy resin curing agent belonging to the class of aliphatic amines containing a benzene ring. It has the molecular formula C8H12N2 and appears as a colorless liquid at room temperature.   As an epoxy resin curing agent, it combines the characteristics of both aliphatic and aromatic amines. It features low viscosity and can cure at room temperature. The benzene ring in its molecular structure endows the cured product with superior heat resistance, water resistance, acid and alkali resistance, and chemical resistance compared to ethylene amines. Consequently, it is widely used in casting, bonding, and anti-corrosion coatings. It also serves as a raw material for producing photosensitive plastics, rubber auxiliaries, polyurethane resins, and coatings, as well as an intermediate in organic synthesis.   1. m-Xylylenediamine and its Derivatives  （1）MXDA → Hydrogenation → 1,3-BAC Features: Low viscosity Low freezing point Good gloss （2）MXDA + ECH → G-328 Features: Good chemical resistance Good adhesion Good low-temperature properties Low CO₂ absorption （3）MXDA → Deamination → PMDA Features: Good electrical properties Low toxicity High and low temperature resistance （4）Modified G-328 Produced by reacting with condensed glycerol ester mixtures Features: Good metal adhesion （5）MXDA + Styrene → Gaskamine 240 Features: Long operating time (long pot life) Stable color Low CO₂ absorption     2. Synthesis of m-Xylylenediamine (Yolatech MXDA) (1) Preparation of Isophthalonitrile Isophthalonitrile is prepared by the ammoxidation of m-xylene with ammonia and air in a fluidized bed catalytic reactor. The catalyst used is V2O5-Cr2O3-SiO2, and the reactor bed temperature is maintained at 400–415℃. The generated isophthalonitrile is collected via thin-walled condensation, then washed with water, dehydrated by centrifugation, and dried to obtain the final product. The consumption per ton of isophthalonitrile is 1200 kg of m-xylene (90%), 1200 kg of liquid ammonia (99%), and 3 kg of catalyst.   (2) Preparation of m-Xylylenediamine Isophthalonitrile, alcohol, and potassium hydroxide are mixed and dissolved, then added to a high-pressure autoclave, followed by the addition of a Raney nickel catalyst paste. The relevant valves are closed, and the air inside the autoclave is evacuated. The vessel is purged with nitrogen several times until all air is removed. After evacuating the nitrogen, hydrogen is pressurized into the autoclave. Under stirring, the temperature is raised to about 90℃, and the hydrogen pressure is regulated and maintained at 4.5 MPa. Under these reaction conditions, hydrogen is continuously supplied until absorption ceases. The mixture is then cooled, excess pressure is released, and the material is discharged and filtered to recover the catalyst. The filtrate is sent to a fractional distillation unit. The alcohol is first distilled off at atmospheric pressure, followed by vacuum distillation. The fraction collected at 143–147℃ under 1.867 kPa is the finished product.     3. Application Fields of Yolatech MXDA (1) Epoxy Resin Curing Agent: Accounts for 75% of total consumption, used in anti-corrosion coatings, adhesives, and other fields due to its excellent room-temperature curing performance and low toxicity. (2) Nylon MXD6: Used as a polymerization monomer to prepare high-performance engineering plastics. It is applied in automotive lightweighting (e.g., Tesla engine components), robot joints, food packaging, and other fields. The global MXD6 market size is expected to exceed $1 billion by 2025. (3) Pharmaceutical Intermediate: Used in the synthesis of anti-tumor drugs and antibacterial agents, accounting for about 10% of the market.    

m-Xylylenediamine (MXDA) is a class of aliphatic amine compound containing an aromatic ring. It is produced from m-xylene through ammoniation oxidation and hydrogenation. As a fundamental amine product, MXDA is widely used in epoxy resin curing agents. Its characteristics as an epoxy curing agent are as follows: the aliphatic primary amine group in its molecular structure allows it to be used as a room-temperature curing agent. Meanwhile, the benzene ring in the structure gives the cured product better heat resistance than aliphatic polyamines, along with excellent chemical resistance, while its irritation and toxicity are lower than those of ethylene amines. Typical Physical and Chemical Data of MXDA (For Reference Only): Property Item Specification / Value Model MXDA Product Name m-Xylylenediamine Appearance Colorless transparent liquid Color (Gardner) 1.0 Max. Density 1.048 ~ 1.056 Viscosity (cps/20℃) 6.8 Freezing Point (℃) 14.1 Active Hydrogen Equivalent 34 The dosage of MXDA for Bisphenol A epoxy resin YLE-128 (epoxy equivalent 185) is approximately 16%-18%. The pot life is about 50 minutes at room temperature for 100g of epoxy resin YLE-128, and complete curing at room temperature takes about 7 days. Performance Characteristics of MXDA as an Epoxy Curing Agent: ✓ Colorless and transparent appearance, imposing no color burden on the cured product; ✓ Low viscosity, making it convenient to handle; ✓ Low active hydrogen equivalent, requiring a small addition amount; ✓ Excellent chemical resistance, showing great resistance to toluene and 10%wt sulfuric acid; ✓ Good thermal stability; ✓ Good water resistance; ✓ Good salt spray resistance. Application Examples of yolatech MXDA: Battery Sealing and Terminal Adhesives MXDA can be used in battery sealing compounds and terminal adhesives (also known as red and black glue or marking glue), which are used for sealing and marking the positive and negative terminals of batteries. Since the adhesive layer is in direct contact with acid gas and liquid while often being subjected to external impact, the adhesive is required to have low viscosity, high fluidity, and excellent penetration. After curing, it must possess superior bonding strength, good sealing, excellent acid and alkali resistance, high hardness, and Excellent resistance to humid heat aging.. As a low-viscosity liquid that cures at room temperature, MXDA yields cured products with excellent heat and chemical resistance, perfectly meeting the performance requirements for battery sealing and terminal adhesives. Anti-corrosion Coatings With its excellent resistance to acid, toluene, and salt spray, MXDA can be combined with epoxy resin for anti-corrosion coatings in bridge repair, pipeline coatings, ships, containers, and flooring. It performs particularly well in bonding adhesion in humid environments. Waterborne Epoxy Curing Agents Modified into waterborne epoxy curing agents, MXDA can shorten the surface drying time of epoxy films and provide better gloss and hardness without affecting the impact resistance and flexibility of the coating. It is especially suitable for the preparation of waterborne anti-corrosion coatings. Construction Repairs MXDA can be modified to prepare epoxy curing agents widely used for repairs in humid environments such as bridge construction. Other Applications MXDA is also used in polyamide wax powder, nylon, pesticides, rubber, isocyanates, carbon fiber composites, and other fields.

Product Information Chemical Name：1,3-Cyclohexanedi(methylamine Alias/Abbreviation/Short Name/Old Name: 1,3-BAC, HXDA, 1,3-Bis(aminoethyl)cyclohexane Application fields: epoxy resin, polyurethane, polyamide   1,3-BAC is an important alicyclic diamine organic compound. At room temperature, it appears as a colorless, transparent, low-viscosity liquid with a distinct ammonia odor. It is corrosive, flammable when exposed to open flames, and has a pungent smell. Soluble in water, Ethanol, etherand various organic solvents.   Due to the characteristics of the product structure, 1,3-BAC having excellent yellowing resistance, low viscosity, rapid curing speed, and excellent chemical corrosion resistance, it is widely used in the formulation of epoxy resin curing agents, the synthesis of polyurethane isocyanates, and the preparation of specialty polyamides.Compared to other curing agent raw materials, this product features rapid curing speed, requires a lower addition amount, and exhibits outstanding resistance to yellowing. Its low solidification point ensures excellent curing performance even in low-temperature and humid environments.   With the decline in the cost of m-phenylenediamine raw materials and the increasing stringency of environmental regulations, 1,3-cyclohexanediamine is gradually emerging as an important alternative to traditional aromatic amines.   Physical Properties Structural formula: Molecular weight: 142.2 Chemical formula: C8H18N2 CAS NO.: 2579-20-6 EINECS NO.r:219-941-5Appearance（25℃): Colorless, transparent liquidColor (APHA): 20 Max Viscosity (mPa·s/20℃): 9.1 Density（g/cm³,25℃): 0.940~0.950 Purity (%): ≥99.0 Active Hydrogen Equivalent (g/eq): 35.5 Melting Point (℃): < -70 Boiling Point (℃): 220 Flash Point (℃): 113 Structural Features The 1,3-cyclohexanediamine molecule contains two primary amine groups, which are chemically highly reactive and can undergo reactions with acids, epoxy groups, isocyanate groups, and other functional groups. Due to the presence of the cyclohexane ring, 1,3-cyclohexanediamine exists in two isomeric forms: cis and trans. Industrial products typically consist of a mixture of these two isomers. The trans isomer is thermodynamically more stable, favoring the formation of polymers with high crystallinity and excellent thermal resistance; whereas the cis isomer promotes the formation of an amorphous structure, enhancing the material's transparency. By adjusting the cis-trans ratio during the synthesis process, it is possible to tailor the final properties of the material.   13-BAC Features: Cures quickly at room temperature; Excellent weather resistance; Low viscosity, easy to handle; Clear and transparent, with a well-defined appearance of the cured material; The cured material exhibits excellent mechanical properties.   Preparation method At present, the industrial production of 1,3-cyclohexanedimethanamine is primarily achieved through the catalytic hydrogenation of m-xylylenediamine (MXDA). This process typically uses m-phenylenediamine as the feed stock and is carried out under high temperature and pressure conditions in the presence of a solvent (such as water or alcohols) and a supported noble-metal catalyst (e.g., ruthenium, palladium, or rhodium). The benzene ring is saturated to form a cyclohexane ring through hydrogenation. During the reaction, by carefully controlling the type of catalyst, reaction temperature, pressure, and reaction time, the ratio of cis and trans isomers in the product can be adjusted. After the reaction, the crude product is separated from the catalyst and then purified by distillation to yield high-purity 1,3-cyclohexanediamine..   Application fields Epoxy resin curing agent 13-BAC is primarily used as an epoxy curing agent or for the preparation of modified epoxy curing agents. Compared to aromatic amine curing agents, it not only has lower viscosity and better handling properties but also yields cured products with outstanding resistance to ultraviolet light (anti-yellowing), as well as excellent weather resistance, temperature resistance, water resistance, and chemical resistance. Moreover, it cures rapidly and can be used for curing at either room temperature or low temperatures. It is widely applied in high-end outdoor floor coatings, stone adhesives, electronic potting compounds, composite materials (such as automotive parts and wind turbine blades), and in the fields of jewelry adhesives and crystal adhesives where appearance and color quality are of paramount importance.   Make an epoxy curing agent Mixing ratio:Epoxy resin YLE-128 (epoxy equivalent weight 190): 100Hardener 1.3-BAC dosage: 17–20 Initial formula (mass ratio) Epoxy resin YLE-128 EEW 100g 190 Hardener 1.3-BAC Active hydrogen quivalent 19g 35.6 @23 ℃, 50% curing performanceTouch-drySemi-dryCompletely dry@5℃, 80% curing performanceTouch-drySemi-dryCompletely dry 1.45h4.5h>24h13.5h>24h>24h   Note: 1. The data listed above are typical values only and do not constitute the product’s technical specifications. 2、The information provided above describes only the product’s performance and does not constitute a guarantee of such performance. Since the formulation and process conditions of end products may vary, we recommend testing the product performance and applicability described above to confirm whether they can achieve your intended results.   As an epoxy curing agent, 1,3-BAC can be used in CFRP. Compared to traditional RTM processes, the high-cycle RTM process (such as HP-RTM) requires shorter cycle times for resin injection, curing, and demolding, and does not require post-curing.   1,3-BAC having a low viscosity ensures more thorough fiber impregnation and extends the working time. Compared to other amine-based curing agents, It can significantly shorten the curing time and eliminates the need for post-curing, thereby enhancing the efficiency of the RTM process. Meanwhile, the cured product exhibits a higher glass transition temperature (Tg). This makes it suitable for mass production of large CFRP components.   Polyurethane raw materials 13-Cyclohexyl dimethylamine is a key raw material for the synthesis of alicyclic isocyanate—hexamethylene diisocyanate (H6XDI). H6XDI does not contain a benzene ring structure and boasts excellent light stability and hydrolysis resistance. It is an important raw material for preparing high-end polyurethane coatings, elastomers, and adhesives, and is particularly well-suited for applications with extremely high requirements for aging resistance, such as automotive paints and outdoor facilities..   Polyamide monomer As a hydrogenated derivative monomer of MXD6 (m-xylylene diamine-adipic acid nylon), 1,3-cyclohexanediamine can be used to synthesize novel cycloaliphatic polyamides. These materials combine the excellent barrier properties and thermal stability of aromatic nylons with the hydrolysis resistance and flexibility of cycloaliphatic materials, making them promising candidates for applications in areas such as food packaging and automotive fuel lines..   Packaging & warehousing & transportation Net weight: 190 kg per drum; packaged in iron drums. During transportation, this product must not be mixed with acids or oxidizing agents. Store in a cool, dry environment, keeping it tightly sealed and protecting it from rain, direct sunlight, and high temperatures. Keep it away from oxidizing agents and acidic substances.   Precautions 1,3-Cyclohexadiamine is a toxic chemical. Acute toxicity studies indicate that the oral LD50 in rats is approximately 880 mg/kg, and the dermal LD50 is about 100 mg/kg. This substance is highly corrosive to the skin, eyes, and respiratory tract, and contact can cause severe burns. When handling this substance, wear protective clothing, chemical-resistant gloves, goggles, and a mask to avoid direct contact with skin and eyes. In case of contact, immediately wipe off the substance. And Rinse thoroughly with plenty of water and seek medical attention..If the eyes come into contact with it, first rinse thoroughly with plenty of water, then seek medical attention immediately.   For information on the safe use of this product, please refer to the Material Safety Data Sheet (MSDS).

Epoxy resin for jewelry generally refers to highly transparent epoxy resin materials used for decorative purposes.   It is widely used in a variety of items, including personal accessories such as earrings, hair clips, necklaces, bracelets, hat badges, brooches, apparel, key rings, buttons, shoe ornaments, belt buckles, and bag charms. It is also applied in daily necessities like door and cabinet handles, hardware fittings, as well as picture frames, signage, and other decorative items.   Epoxy resins for jewelry are typically categorized into flexible resin, rigid resin, doming resin, and casting/polishing resin. The main components usually include epoxy resin, amine curing agents, and various additives. These resins are characterized by high transparency, flexibility or high hardness, and excellent yellowing resistance.   1,3-BAC (1,3-Cyclohexanedimethanamine) is an aliphatic amine and serves as a key raw material for epoxy curing agents, widely used around the world. When used as a raw material for jewelry epoxy curing agents, 1,3-BAC offers typical advantages such as low viscosity, high hardness, high transparency, yellowing resistance, and fast curing speed. This endows the epoxy jewelry resin with a more ideal appearance and outstanding performance.   Typical Physical and Chemical Data of 1,3-BAC: Product Name: 1,3-Cyclohexanedimethanamine Appearance: Colorless transparent liquid Color (APHA): 20 Max Viscosity (cps/20℃): 9.1 Density: 0.940 - 0.950 Freezing Point (℃): < -70 Active Hydrogen Equivalent: 35.6   Features: Fast curing speed at room temperature Excellent weather resistance Low viscosity and easy handling Crystal clear with excellent appearance of cured products Cured products possess excellent mechanical properties

  Today, we are excited to introduce a product touted as the "twin brother of Triethylenetetramine (TETA)" — N4-Amine.     Appearance Colorless clear liquid Purity 98% min Color (APHA) 50 max Water Content 0.5 max Amine Value mgKOH/g 1200 min Density 25°C 0.95g/cm³ Boiling Point 314.9 °C Flash Point 153.1 °C   N4-AMINE (N,N'-Bis(3-aminopropyl)ethylenediamine) is a propylene-based aliphatic amine. As a colorless, transparent liquid, it serves as an excellent substitute for ethylene polyamines. Classified as an aliphatic polyfunctional amine, N4-AMINE offers a powerful alternative beyond standard ethylene amines. With its low viscosity and rapid gelation speed, its active hydrogen characteristics make modification a breeze. It not only boasts exceptional toughness but also delivers outstanding adhesion, making its performance advantages clear and evident.   Need fast drying and high strength? → Choose N4-Amine. In daily applications, it reacts incredibly fast. When paired with YLE-128, it handles both low-temperature environments and rapid curing requirements with ease. N4-AMINE is truly an all-rounder. Looking for an efficient, powerful, and stable adhesive material? You can't go wrong choosing N4-AMINE! Moreover, N4-AMINE can replace traditional ethylene amines in modification processes. For modified polyamides, it offers faster gelation speeds and stronger paint film adhesion.   From epoxy resin curing agents to polyurethane accelerators, N4-AMINE has a wide range of applications, bringing convenience to various industries. Its packaging options are equally flexible: while the standard is a 190KG drum, we can also provide IBC totes to meet your specific needs.    

Yolatech Company DMP-30 Equivalent Grades: K54, KH-30, HI-54K, HY960.   Yolatech DMP-30 consists of 2,4,6-Tris(dimethylaminomethyl)phenol. It is a versatile curing accelerator designed to shorten the curing time of epoxy resin systems. It exhibits excellent compatibility with Polyamine and Polyamide series epoxy curing agents. It is soluble in alcohol, benzene, acetone, and cold water, and slightly soluble in hot water.   Physical Properties Chemical Name: 2,4,6-Tris(dimethylaminomethyl)phenol Synonyms: DMP-30 / K-54 / Accelerator Catalyst HI-54K Molecular Formula: C₁₅H₂₇N₃O Molecular Weight: 265.4 CAS Number: 90-72-2 EINECS Number: 202-013-9 Appearance: Transparent light yellow liquid Color: Max 6 (Gardner) Amine Value: 580-630 mgKOH/g Viscosity (25°C): 100-300 cps (Brookfield) Moisture Content: Max 0.5% Refractive Index (20°C): 1.5150-1.5200 Specific Gravity (25°C): 0.97-0.99 Flash Point: 150°C     Applications DMP-30 serves as a curing accelerator in solvent-based or solvent-free epoxy systems, including: Polyamine series curing systems. Polyamide and Amidoamine series epoxy curing systems. Mercaptan (Thiol) series epoxy curing systems. Carboxylic Acid Anhydride or Polysulfide series epoxy curing systems. It is widely used in coatings, adhesives, and flooring industries. It acts as a catalyst for epoxy automotive body adhesives, epoxy-anhydride systems, and as a solid catalyst for isocyanates and polyols.     Mechanism of Action The reaction between epoxy resin (containing epoxy groups) and amine curing agents (such as aliphatic amines and polyamides) is a nucleophilic ring-opening reaction: the amine group (-NH₂) attacks the ring of the epoxy group, opening the ring to form hydroxyl groups (-OH), which then undergo further crosslinking.However, this reaction is slow at room temperature (especially in low-temperature environments). DMP-30's phenolic hydroxyl group activates the epoxy group via hydrogen bonding, while the dimethylamino group (-N(CH₃)₂) acts as a nucleophile to promote the combination of the amine and epoxy groups. This significantly lowers the activation energy, shortening the curing time by 30%-50% (e.g., at 25°C, curing takes 24 hours without accelerator, but only 8-12 hours with DMP-30).   Recommended Dosage 1. As Epoxy Curing Agent: When used alone, the dosage for YLE-128 epoxy resin (Epoxy Equivalent Weight 185-195) is approximately 10%. It enables rapid curing at room temperature or low temperatures for coatings, castings, and sealants. For YLE-220 epoxy resin, the dosage is approximately 12.5%. For Epoxy-Liquid Polysulfide systems, the dosage is 10-15% for room temperature curing and 6% for heat curing. It imparts unique bonding, casting, and sealing properties. Typical range: 5-15 PHR. 2. As Epoxy Accelerator: When mixed with other epoxy curing agents, it acts as an accelerator to increase curing rates. Dosage is 0.1%-3% PHR of the main curing agent. Widely used in anti-corrosion coatings, cast floor concrete protection, and adhesives. 3. As Polyurethane Catalyst: It is a catalyst for isocyanate trimerization. It has higher catalytic selectivity for Polyisocyanurate (PIR) reactions compared to PUR, making it suitable for PIR formulations. DMP-30 is a milder activity catalyst; it requires a larger dosage in formulations, resulting in a gentle reaction, stable rise, good flowability, and end products with PIR high-temperature and flame-retardant effects.     Advantages Highly efficient acceleration (strong low-temperature applicability). Improves coating film hardness and chemical resistance. Good compatibility with most epoxy resins and curing agents (no phase separation).     Limitations May experience slight yellowing upon long-term UV exposure (due to phenolic hydroxyl oxidation), making it unsuitable for outdoor high-gloss flooring. Irritating to skin; potential for trace formaldehyde release. Protective equipment must be worn during application.     Storage & Handling Avoid excessive heat and humidity. Store in unopened original containers at room temperature, away from fire sources, strong acids, strong bases, and strong oxidizing agents. Shelf life is 12 months from the date of production. Precautions: Please refer to the Yolatech Product DMP-30 Material Safety Data Sheet (MSDS). Packaging: 200Kg drum, 1000 IBC.  

Nonylphenol has long been used in epoxy resin systems as a functional aid to promote dilution. However, in recent years, with increasing health awareness and stricter environmental regulations, the use of nonylphenol has become increasingly restricted. Nanjing Youlai's Styrenated Phenol MSP-250 serves as an epoxy resin modifier. In addition to its ideal chemical properties, it meets the demands of environmental regulations.   Typical Data Product Name: Styrenated Phenol Grade: MSP-250 Appearance: Liquid Color (APHA): <200 Viscosity (cps/25°C): 300~800 Hydroxyl Value (mg KOH/g): 230~260   Performance Features As an epoxy resin modifier, MSP-250 is a clear, low-viscosity liquid. When added to the curing agent component, it accelerates the curing speed and improves the water resistance, anti-whitening properties, scratch resistance, abrasion resistance, hardness, and leveling performance of the cured product. MSP-250 exhibits color stability under both long-term and high-temperature conditions. Comparison of color performance between MSP-250 and Nonylphenol when mixed with curing agents:   Within 1 week at room temperature: No significant difference observed. Within 3 days at 60°C: MSP-250 demonstrates superior color stability compared to Nonylphenol. Within 1 week at 60°C: MSP-250 demonstrates superior color stability compared to Nonylphenol.   Application Area Epoxy Coatings & Heavy-duty Anti-corrosion Coatings: Acts as a plasticizer, diluent, and accelerator. Craft & Jewelry Adhesives: Offers excellent transparency, abrasion resistance, and adhesion. Electronics & Electrical: Suitable for potting, varnishes, industrial adhesives, and LED encapsulation. Automotive Sealants: Improves bonding for doors and headliners, providing waterproofing and rust prevention for internal and external panels. Civil Engineering & Construction: Applicable for crack sealing, crack injection, carbon fiber reinforcement, and steel reinforcement.