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Enamel Wire Paints 
Other name: 1,1,1-tris(hydroxymethyl)propane,     2-ethyl-2- (hydroxymethyl)  propane-1,3-diol 
CAS number: 77-99-6
Product standard: HG/T 4122-2020
Annual capacity: 20,000 tons/year
Structural skeleton symbol: CH3CH2C(CH2OH)3
Molecular weight: 134.18
Hygroscopy: hygroscopic
Boiling point: 295℃, under atmospheric pressure
Solubility: it is soluble in water and acetone, and also soluble in carbon tetrachloride, chloroform and ether, but insoluble in aliphatic hydrocarbon and aromatic hydrocarbon.
Technical requirements
 items Limits
Solid Liquid
Premium  grade Qualified grade Qualified grade
Appearance White  flakes Off-white  flakes Transparent  liquid without visible mechanical impurities
Trimethylolpropane, w/% ≥99.0 ≥98.5 ≥98.5
Moisture,w/ % ≤0.05 ≤0.10 ≤0.10
Acid ( As HCOOH ), w/% ≤0.002 ≤0.002
Melting chroma/ (APHA) ≤15 ≤20 -
Chroma / (APHA) - ≤25
Package type

To be packed with plastic lined composite bag with net weight 25kg.

To be packed with plastic lined composite bag with net weight 500/1000kg.


1. Used as the raw material of synthetic resin, and also used for synthetic aviation lubricating oil, plasticizer, etc.

2. Used as the glycerine substitute, and also used for the synthesis of drying oil.

3. Widely used in the production of polyester and polyurethane foam, also used in the manufacture of alkyd coatings, synthetic lubricants, plasticizer, surfactant, rosin ester and explosives. Also used directly as textile auxiliary agent and PVC resin thermal stabilizer. And used in alkyd resin application, it can improve the resin's firmness, color, weather resistance, chemical resistance, and sealing properties.

4. Have the advantages of improving the firmness, corrosion resistance and sealing performance of resin, and have good stability to hydrolysis, pyrolysis and oxidation.

Brand customers
Acetic Ester Products
Trimellitic Anhydride And Their Derivatives
Trimethylolpropane And Its By-products
Glycol Ether Products
Enamel Wire Paints
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