1,1,1-TRIMETHYLOLPROPANE

PRODUCT IDENTIFICATION
CAS NO. 77-99-6

TRIMETHYLOLPROPANE
EINECS NO. 201-074-9
FORMULA C2H5C(CH2OH)3
MOL WT. 134.18
H.S. CODE 2905.41.0047

TOXICITY

 Oral rat LD50: 14100 mg/kg
SYNONYMS 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol; TMP; Trimethylolpropane;
Trimethylol propane;  Propylidynetrimethanol; 1,1,1-Tris(hydroxymethyl)propane; Ethriol; Ethyltrimethylolmethane; Hexaglycerine; 2,2-Bis(hydroxymethyl)-1-butanol; Propylidintrimethanol (German); Propilidintrimetanol (Spanish); Propylidynetriméthanol (French); Other RN: 30774-18-6; 51811-73-5; 53632-31-8; 59218-55-2; 65581-89-7; 69896-09-9; 77974-02-8; 97649-49-5; 101164-61-8; 102984-18-9; 110368-52-0; 853320-12-4;

SMILES

 C(CC)(CO)(CO)CO

CLASSIFICATION

Polyol

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

white flakes
MELTING POINT 55 - 59 C
BOILING POINT 289 C
SPECIFIC GRAVITY 1.17 - 1.18
SOLUBILITY IN WATER Freely soluble, 1.00E+06 mg/l (Soluble in alcohol, glycerin. Insoluble in hydrocarbon solvents)
pH

4 - 7
VAPOR DENSITY 4.8
AUTOIGNITION

295 C
log Pow -1.48E+00 (Octanol-water)
VAPOR PRESSURE 4.49E-05 (mmHg)
HENRY'S LAW 7.93E-12 (atm-m3/mole at 25 C)
OH RATE 1.38E-11 (cm3/molecule-sec at 25 C Atmospheric)
NFPA RATINGS  

REFRACTIVE INDEX

  
FLASH POINT

 
STABILITY Stable under ordinary conditions. Hygroscopic.

GENERAL DESCRIPTION & EXTERNAL LINKS
Trimethylolpropane, containing three primary hydroxyl groups in a quaternary mole structure, is a white crystalline solid or clear liquid in molten form at high temperature; melting at 57 C; soluble in water, alcohol, glycerin; insoluble in hydrocarbon solvents. It is prepared by the hydrogenation reaction of aldehyde ( n-butyraldehyde and formaldehyde). It is used as an important raw material in manufacturing polyesters, alkyd and urethane resins. It improves heat resistance, color stability, balance between toughness and flexibility. It is also used in lubricating oils and plasticizers as well as in radiation curing monomers or oligomers.

Wikipedia Linking: http://en.wikipedia.org/wiki/Trimethylolpropane

http://www.lyondellbasell.com/
POLYMEG® polyols are polytetramethylene ether glycols (PTMEG) produced by polymerizing tetrahydrofuron. POLYMEG polyols are linear diols with a backbone of repeating tetramethylene units connected by ether linkages. The chains are capped with primary hydroxyl units. The primary applications for POLYMEG polyols are as the soft segment of polyurethanes, copolymer polyesters and polyamide elastomers. As a component of urethane elastomers, the polyols are used in the following systems:

  • Thermoplastics for injection molding and extrusion
  • Thermoset polyurethanes, castable prepolymers, millable gums
  • Metal and textile coatings/linings and adhesives
  • Spandex elastic fibers..........

......To produce low hardness elastomers using TDI technology, glycols such as 1,4-butanediol (BDO) may be used. Since allophonate cross-linking is more difficult in this system, the use of a trifunctional glycol, such as trimethylolpropane (TMP) is recommended. The reactivity of a diol/triol extender is lower than that of MOCA and therefore demolding times are longer. Catalysts, such as amines and metal salts, can be used to shorten demolding times.....
SALES SPECIFICATION

APPEARANCE

white flakes

PURITY

99.0% min
HYDROXYL VALUE

1230 min ( mg KOH/kg)

ASH

0.005% max

WATER

0.1% max
TRANSPORTATION
PACKING 25KGS  in bag and big bag
HAZARD CLASS Not regulated
UN NO.  
OTHER INFORMATION
Hazard Symbols: n/a, Risk Phrases: n/a, Safety Phrases: 24/25