ChemicalBook > CAS DataBase List > Trimethylolpropane

Trimethylolpropane

Product Name: Trimethylolpropane
CAS No.: 77-99-6
Chemical Name: Trimethylolpropane
Synonyms: 1,1,1-TRIS(HYDROXYMETHYL)PROPANE;Trimethylol propane;propylidynetrimethanol;HEXAGLYCEROL;Trimethylopropane;1,1,1-TRIMETHYLOLPROPANE;Trimethylol;Abbreviation;Trimethylolpropan;TrimethanolPropane
CBNumber: CB3725999
Molecular Formula: C6H14O3
Formula Weight: 134.17
MOL File: 77-99-6.mol

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Trimethylolpropane Property

Melting point:: 56-58 °C(lit.)
Boiling point:: 159-161 °C2 mm Hg(lit.)
Density: 1.176
bulk density: 700kg/m3
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
InChIKey: ZJCCRDAZUWHFQH-UHFFFAOYSA-N
LogP: -0.975 (est)
CAS DataBase Reference: 77-99-6(CAS DataBase Reference)
NIST Chemistry Reference: 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-(77-99-6)
EPA Substance Registry System: Trimethylolpropane (77-99-6)

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Safety

Safety Statements: 22-24/25
WGK Germany: 1
RTECS: TY6470000
Autoignition Temperature: 375 °C DIN 51794
TSCA: Yes
HS Code: 29054100
Hazardous Substances Data: 77-99-6(Hazardous Substances Data)
Toxicity: LD50 orally in Rabbit: > 2500 mg/kg

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 8.08394
Product name: 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity: for synthesis
Packaging: 100g
Price: $66.6
Updated: 2025/07/31

Sigma-Aldrich

Product number: 8.08394
Product name: 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity: for synthesis
Packaging: 1kg
Price: $114
Updated: 2025/07/31

Sigma-Aldrich

Product number: 8.08394
Product name: 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol
Purity: for synthesis
Packaging: 2.5kg
Price: $241
Updated: 2025/07/31

Sigma-Aldrich

Product number: 148083
Product name: 1,1,1-Tris(hydroxymethyl)propane
Purity: 97%
Packaging: 500g
Price: $30.6
Updated: 2025/07/31

Sigma-Aldrich

Product number: 148083
Product name: 1,1,1-Tris(hydroxymethyl)propane
Purity: 97%
Packaging: 3kg
Price: $135
Updated: 2025/07/31

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Trimethylolpropane Chemical Properties,Usage,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.

Uses

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.

Application

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.

Definition

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).

Synthesis

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.

Purification Methods

Various procedures have been suggested for separating the trimethylolpropane from the formate. For instance, the concentrated reaction solution can be extracted with an organic solvent, which is then evaporated and the crude trimethylolpropane is purifified by vacuum distillation. In another variant, the aqueous reaction solution is evaporated until most of the sodium formate crystallizes and is removed by hot fifiltration. The application of electrodialysis has also been suggested. The liquid trimethylolpropane which remains is liberated of residual salts with an ion exchanger and then distilled. The removal of discoloring impurities is described in. Cyclic diethers of the acetal type (1,3-dioxanes, formals) can be converted into TMP and methanol by metal-catalyzed hydrogenation. Removal of high boiling acetals by acid treatment has been described.

Purification Methods

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

Trimethylolpropane Preparation Products And Raw materials

Raw materials

Film evaporator Formaldehyde Butyraldehyde

Preparation Products

synthetic fiber oil QDH-101 Polyurethane Flame retardant for pure-dacron Toluene diisocyanate

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View Lastest Price from Trimethylolpropane manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD

Product: Trimethylolpropane 77-99-6
Price: US $0.00/KG
Min. Order: 1KG
Purity: 98%min
Supply Ability: 30tons/month
Release date: 2023-01-30

Hebei Chuanghai Biotechnology Co., Ltd

Product: Trimethylolpropane(TMP) 77-99-6
Price: US $0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-10-31

HebeiShuoshengImportandExportco.,Ltd

Product: Trimethylol propane 77-99-6
Price: US $6.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 2000KG/Month
Release date: 2024-08-02

77-99-6, TrimethylolpropaneRelated Search:

CHLOROETHANE Ethyl cellulose Ethyl acetate Ethyl acrylate Ethylparaben Ethylbenzene 1,1,1-Tris(hydroxymethyl)ethane Tris(hydroxymethyl)nitromethane Hexaglycerol trimethacrylate Ethanol TRIS hydrochloride Trimethylhydroquinone Trimethyl phosphate Trimethyl orthoacetate Trimethylamine Trimethylamine hydrochloride Tris(hydroxymethyl)aminomethane Trimethylolpropane triacrylate

1,1,1-TRIS(HYDROXYMETHYL)PROPANE, DIST.

TrimethanolPropane

1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-

Trimethylol

Abbreviation

propylidynetrimethanol

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

Trimethylolpropan

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

1,1,1-tris(

2-ethyl-2-hydroxymethyl-3-propanediol

1,1,1-N-Tris(hydoxymethyl)propane

Trimethylol 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]

Tri(hydroxymethyl)propane

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

HEXAGLYCEROL

2,2'-DIHYDROXYMETHYL-1-BUTANOL

2,2-BIS(HYDROXYMETHYL)-1-BUTANOL

2-ETHYL-2-(HYDROXYMETHYL)-1,3-PROPANEDIOL

1,1,1-TRIS(HYDROXYMETHYL)PROPANE