Trimethylolpropane

Manufacturer: Baichuan (Rugao) Chemical Co. Ltd.
Synonyms: 1,1,1-tris(hydroxymethyl)propane,2-ethyl-2-(hydroxymethyl)-1,3-propanediol
English Abbre.: TMP
Cas No: 77-99-6
Struc. formula: CH₃CH₂C(CH₂OH)₃
Mole. weight: 134.17
Hygroscopicity: Strong ability to absorb moisture while exposed to atmosphere
Solubility: Easily soluble in water and acetone, soluble in carbon tetrachloride, chloroform and aether, insoluble in fatty hydrocarbon and aromatic hydrocarbon.
Crystallizing P.: ≥-46℃
Boiling point: 295℃ under normal pressure
Density(p₂₀): 1.176g/cm³
Trademark:
Product standard: Q/320682NUU 03—2012 <Trimethylolpropane for industrial use>

Specification:

Items	Limits
	Premium Grade	Superior Grade	Qualified Grade
Appearance	White flakes	Offwhite solid
Purity/%	99.0min.	99.0min.	98.5min.
OH-percentage/%	37.5min.	37.5min.	37.0min.
Water Content/%	0.05max.	0.05max.	0.1max.
Acidity(As HCOOH) /%	0.002 max.
Colour/(APHA)	20max.	30max.	50max.
Crystallizing Point/℃	59.0min.	58.0min.	58.0min.
Ash Content/%	0.005 max.

Applications:
a) Alkyd resins;
b) Saturated polyesters;
c) Synthetic lubricants;
d) Monomers/oligomers for radiation curing;
e) Pigment coating;
f) Polyurethanes for coatings and foams.

Package and delivery:
25 kg net weight in composite bags, or at customer's request, packed in woven bags at 500/1000 kg net weight.