Trimethylolpropane

Description

Trimethylolpropane · CAS 77-99-6 · C6H14O3. UNII 090GDF4HBD. Boiling Point: 160 °C @ 5 MM HG; Boiling Point: 292-297 °C; Melting Point: 58 °C.

Identification

CAS Registry Number	77-99-6
PubChem CID	6510
Molecular formula	C6H14O3
IUPAC name	2-ethyl-2-(hydroxymethyl)propane-1,3-diol
UNII (FDA)	090GDF4HBD

Computed Descriptors

Molecular Weight	134.17
XLogP3	-0.8
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	4
Exact Mass	134.094294304
Monoisotopic Mass	134.094294304
Topological Polar Surface Area	60.7
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Boiling Point	160 °C @ 5 MM HG
Boiling Point	292-297 °C
Melting Point	58 °C
Flash Point	172 °C c.c.
Density	1.084 g/cm³
Vapor Pressure	0.0000449 [mmHg]
LogP	-0.5
Autoignition Temperature	~375 °C

Physical description & handling notes

• Large Crystals; Large Crystals; Other Solid; CBI; Dry Powder; Wet Solid; Other Solid; Dry Powder; Liquid; Liquid
• Colorless to white hygroscopic solid; [ICSC] White crystalline chunks; [MSDSonline]
• COLOURLESS-TO-WHITE HYGROSCOPIC CRYSTALS OR PELLETS.
• WHITE POWDER OR PLATES
• COLORLESS CRYSTALS
• SOL IN ALL PROP IN WATER, ALCOHOL; INSOL IN BENZENE, CARBON TETRACHLORIDE

Regulatory Status

Regulatory & Food Contact	FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS Trimethylolpropane (CAS Reg. No. 77-99-6) For use at levels not to exceed 0.45 percent by weight of pigment. The pigmented articles may contact all food 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl) (CAS Reg. No. 77-99-6)
GHS notification summary	94% (4784 / 5087)

GHS Hazard Classification

GHS notification summary	94% (4784 / 5087)
Reported hazard statements	H360

Documented Uses

• Used to make varnishes, alkyd resins, polyesters, UV cross linking agents, and esters; Also used in synthetic drying oils, urethane foams and coatings, silicone lube oils, lactone plasticizers, textile finishes, surfactants, epoxidation products, and as a cross-linking agent for spandex fibers; [HSDB] Used to make resins in closed systems; [OECD SIDS: Trimethylolpropane]
• Textiles (Fiber & Fabric Manufacturing) [Category: Industry]
• Painting (Solvents) [Category: Paint]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• CONDITIONING AGENT; MFR OF VARNISHES, ALKYD RESINS; SYNTHETIC DRYING OILS; URETHANE FOAMS & COATINGS; SILICONE LUBE OILS; LACTONE PLASTICIZERS; TEXTILE FINISHES; SURFACTANTS; EPOXIDATION PRODUCTS
• CHEM INT FOR POLYESTERS FOR POLYURETHANE FOAMS

Synonyms

Trimethylolpropane; 77-99-6; 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol; 1,1,1-TRIS(HYDROXYMETHYL)PROPANE; Ethriol; Hexaglycerine; Etriol; Ettriol; TMP (alcohol); Propylidynetrimethanol; 1,1,1-Trimethylolpropane; Ethyltrimethylolmethane; 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-; Tri(hydroxymethyl)propane; Tris(hydroxymethyl)propane; 2,2-Bis(hydroxymethyl)-1-butanol

Frequently Asked Questions

What are the CAS number and molecular formula of Trimethylolpropane?

CAS 77-99-6; molecular formula C6H14O3; molecular weight — g/mol.

What other names is Trimethylolpropane known by?

Trimethylolpropane, 77-99-6, 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,1,1-TRIS(HYDROXYMETHYL)PROPANE, Ethriol, Hexaglycerine.

What is the regulatory status of Trimethylolpropane?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS.

Is Trimethylolpropane classified as hazardous?

94% of GHS notifications report no hazard classification (4784 of 5087).

What are the key physical properties of Trimethylolpropane?

Boiling Point: 160 °C @ 5 MM HG; Boiling Point: 292-297 °C; Melting Point: 58 °C; Flash Point: 172 °C c.c..

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.