ChemicalBook >> CAS DataBase List >>Trimethylolpropane


Chemical Name:
1,1,1-TRIS(HYDROXYMETHYL)PROPANE;Trimethylol propane;propylidynetrimethanol;HEXAGLYCEROL;Trimethylopropane;1,1,1-TRIMETHYLOLPROPANE;Trimethylol;Abbreviation;Trimethylolpropan;TrimethanolPropane
Molecular Formula:
Molecular Weight:
MDL Number:
MOL File:
MSDS File:
Modify Date:2022-12-21 16:56:50

Trimethylolpropane Properties

Melting point 56-58 °C(lit.)
Boiling point 159-161 °C2 mm Hg(lit.)
Density 1.176
vapor density 4.8 (vs air)
vapor pressure <1 mm Hg ( 20 °C)
refractive index 1.4850 (estimate)
Flash point 172 °C
storage temp. Store below +30°C.
solubility H2O: 0.1 g/mL, clear
pka 14.01±0.10(Predicted)
form Flakes
color White
PH 6.5 (100g/l, H2O, 20℃)(External MSDS)
explosive limit 2-11.8%(V)
Water Solubility soluble
BRN 1698309
CAS DataBase Reference 77-99-6(CAS DataBase Reference)
Indirect Additives used in Food Contact Substances TRIMETHYLOLPROPANE
FDA 21 CFR 175.105; 175.300; 175.320
NIST Chemistry Reference 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-(77-99-6)
EPA Substance Registry System Trimethylolpropane (77-99-6)


Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
Signal word  Warning
Hazard statements  H361fd
Precautionary statements  P201-P202-P280-P308+P313-P405-P501
Safety Statements  22-24/25
WGK Germany  1
RTECS  TY6470000
Autoignition Temperature 375 °C DIN 51794
HS Code  29054100
Toxicity LD50 orally in Rabbit: > 2500 mg/kg
NFPA 704
0 0

Trimethylolpropane price More Price(25)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.08394 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol for synthesis 77-99-6 100g $61.3 2023-01-07 Buy
Sigma-Aldrich 8.08394 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol for synthesis 77-99-6 1kg $105 2023-01-07 Buy
Sigma-Aldrich 8.08394 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol for synthesis 77-99-6 2.5kg $222 2023-01-07 Buy
Sigma-Aldrich 148083 1,1,1-Tris(hydroxymethyl)propane 97% 77-99-6 500g $28.5 2023-01-07 Buy
Sigma-Aldrich 148083 1,1,1-Tris(hydroxymethyl)propane 97% 77-99-6 3kg $126 2023-01-07 Buy
Product number Packaging Price Buy
8.08394 100g $61.3 Buy
8.08394 1kg $105 Buy
8.08394 2.5kg $222 Buy
148083 500g $28.5 Buy
148083 3kg $126 Buy

Trimethylolpropane Chemical Properties,Uses,Production

Chemical Properties

Trimethylolpropane is a Colorless, hygroscopic crystals. Soluble in water and alcohol. Combustible.The three primary hydroxyl groups undergo the normal OH group reactions.


Trimethylolpropane acts as a precursor to alkyd resins, high-gloss coatings and ion exchange resins. It is also employed as a multifunctional monomer utilized for the production of coatings, ethoxylated and propoxylated trimethylolpropane derivatives. Further, it serves as a building block in the polymer industry.


Trimethylolpropane is used in saturated polyesters for coil coatings, alkyds for paints, polyurethanes for coatings and elastomers, acrylic acid esters for radiation curing, esters for synthetic lubricants, rosin esters and for surface treatment of pigments.
Large quantities of trimethylolpropane and its ethoxylated derivatives are used as precursors for urethanes and polyester resins. Another important field of application is in medium-oil and short-oil alkyd resins (→ Alkyd Resins). The resulting lacquers are characterized by excellent resistance to alkali, detergents, and water, combined with outstanding impact resistance and flexibility, as well as excellent clearness and clearness retention.


ChEBI: Trimethylolpropane is a primary alcohol. It is used as a precursor for the manufacture of resins including alkyds, saturated polyesters and polyurethanes (polyester polyol and polycarbonate diol).


Trimethylolpropane is made by the base-catalyzed aldol addition of butyraldehyde with formaldehyde followed by Cannizzaro reaction of the intermediate 2,2-bis(hydroxymethyl) butanal with additional formaldehyde and at least a stoichiometric quantity of base.
synthesis of trimethylolpropane (TMP)

Purification Methods

Crystallise it from acetone and ether and it distils at high vacuum. [Beilstein 1 III 2349.]

Global( 510)Suppliers
Supplier Tel Email Country ProdList Advantage
Hefei TNJ Chemical Industry Co.,Ltd.
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View Lastest Price from Trimethylolpropane manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Trimethylolpropane pictures 2023-01-31 Trimethylolpropane
US $0.00-0.00 / KG 1KG 99% 500000kg Hebei Guanlang Biotechnology Co., Ltd.
Trimethylolpropane pictures 2023-01-31 Trimethylolpropane
US $0.00 / KG 1KG 98%min 30tons/month WUHAN FORTUNA CHEMICAL CO., LTD
Trimethylolpropane Tmp pictures 2023-01-30 Trimethylolpropane Tmp
US $40.00 / Kg/Drum 10g 99 % 10000kg Hebei Crovell Biotech Co Ltd
1,1,1-TRIS(HYDROXYMETHYL)PROPANE, DIST. Trimethylolpropane, carbamate with tolylene diisocyanate solution Trimethyloy propane TRIMETHYLOLPROPANE(TMP) 1,1,1-Tris(hydroxymethy1)propane TRIMETHYLOLPROPANE (2-ETHYL-2-HYDROXYMETHYLPROPANE) TMP 2-ETHYL-2-HYDROXYMETHYLPROPANE-1,3-DIOL Perstorp Trimethylolpropane (TMP) 2-Ethyl-2-hydroxymethyl-1,3-propanediol, Trimethylolpropane 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol,98% 1,1,1-Propanetriyltrismethanol 1,1',1''-Propylidynetrimethanol 2-(Hydroxymethyl)-2-ethyl-1,3-propanediol 1,1,1-tris(hydroxymethyl)propane /Hexaglycerine TRIS(HYDROXYMETHYL)PROPANE (propanetriyl)tris-methano 1,1,1-Tris(hydroxy)propane 1,1,1-tris(hydroxymethyl)-propan 2,2-bis(hydroxymethyl)-1-butanol[qr] 2,2-Dihydroxymethylbutanol 2-ethyl-2-(hydroxymethyl)-3-propanediol 2-Ethyl-2-(hydroxymethyl)propanediol 2-ethyl-2-hydroxymethyl-3-propanediol 1,1,1-N-Tris(hydoxymethyl)propane 3-Propanediol,2-ethyl-2-(hydroxymethyl)-1 Butanol, 2,2-bis(hydroxymethyl)- Ethriol Ethyltrimethylolmethane Etriol Ettriol Hexaglycerine Methanol, (propanetriyl)tris- Propane, 1,1,1-tris(hydroxymethyl)- TMP (Alcohol) tmp(alcohol) tmp[alcohol] 2,2-Bis(hydroxymethyl)-1-butanol 2-Ethyl-2-hydroxymethyl-1,3-propanediol Hexaglycerol 1,1,1-Tris(hydroxymethyl)propane 2-ETHYL-2-(HYDROXYMETHYL)-1,3-PROPANEDIO TMP, TriMethylol propane 1,1,1-Tris(hydroxyMethyl)propane (TMP) 2-Ethyl-2-(hydroxyMethyl)-1,3-propanediol, 98% 1KG 2-Ethyl-2-(hydroxyMethyl)-1,3-propanediol, 98% 500GR 1,1,1-Tris(hydroxymethyl)propane dist., >=98.0% (GC) 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol for synthesis 2,2'-DIHYDROXYMETHYL-1-BUTANOL 2,2-BIS(HYDROXYMETHYL)-1-BUTANOL 1,1,1-Trihydroxymethylpropane TMPHYDRO(R) PROPYLIDYNETRIS(METHANOL) Trimethylolpropane > 2-Ethyl-2-(hydroxymethyl)-1 Trimethylolpropane Tmp CAS No. 77-99-6 with Competitive Price High quality TRIMETHYLOL PROPANE Extra Pure 1,1,1-tris( 1,1,1-Tris(hydroxymethyL TrimethanolPropane 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)- Trimethylol