Trimethylolpropane CAS 77-99-6

Product name:Trimethylolpropane
CAS：77-99-6
MF：C6H14O3
MW：134.17
EINECS:201-074-9

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Model:
77-99-6
Brand:
futurechem
Code:
77-99-6

Product Description

Product Description

Product name:Trimethylolpropane

CAS：77-99-6

MF：C6H14O3

MW：134.17

EINECS:201-074-9

Application:

It is widely used in the production of polyester and polyurethane foams, as well as in the manufacture of alkyd coatings, synthetic lubricants, plasticizers, surfactants, rosin esters and explosives. It is also directly used as a textile auxiliary and thermal stabilizer of PVC resin. When used in alkyd resin, it can improve the solidity, color tone, weather resistance, chemical resistance and sealing of the resin.

Specifications :

Trimethylolpropane Basic information
Product Name:	Trimethylolpropane
CAS:	77-99-6
MF:	C6H14O3
MW:	134.17
EINECS:	201-074-9
Mol File:	77-99-6.mol
Trimethylolpropane Chemical 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)
Fp	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
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)

Testing Items	Testing Result
Appearance	White crystalline flake
content %	≥99
Hydroxyl number %	≥37.5
acid number %	≤0.002
Ash Content %	≤0.005
Moisture %	≤0.05
Melting Point (Final) ℃	≥58
Hazen(APHA)	≤20

公司信息

Trimethylolpropane CAS 77-99-6 C6H14O3

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.