TRIMETHYLOLPROPANE- ▸ Alkyd and polyester resins: Triol for alkyd and polyester resin synthesis.
- ▸ Polyurethanes: Polyol for polyurethane coatings and foams.
- ▸ UV-curable crosslinkers: Backbone for acrylate ester crosslinkers (e.g., TMPTA).
- ▸ Synthetic lubricants: Feedstock for synthetic ester base oils.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Trimethylolpropane (CAS 77-99-6) is a trihydric alcohol (triol) used as a branching and crosslinking polyol. Industry references record its use in alkyd resins, polyesters, urethane foams and coatings, UV-crosslinking agents and esters, and synthetic ester lubricants. Supplied as a bulk polyol intermediate.
Frequently Asked Questions
What is trimethylolpropane used for?
Trimethylolpropane (TMP, CAS 77-99-6) is a trihydric alcohol used as a branching and crosslinking polyol. It is a building block for alkyd and polyester resins, polyurethane coatings and foams, UV-curable acrylate crosslinkers such as TMPTA, and synthetic ester base oils for lubricants.
What is another name for trimethylolpropane?
TMP is also known by its IUPAC name 2-ethyl-2-(hydroxymethyl)propane-1,3-diol, and is commonly abbreviated TMP. The molecular formula is C6H14O3.
Is trimethylolpropane water soluble?
TMP is a triol (three hydroxyl groups) and is readily soluble in water, as well as in alcohols and many polar organics. This solubility profile reflects its use as a reactive polyol intermediate in resin and ester synthesis. Consult the SDS for full physical-property data.
What is the CAS number and molecular weight of trimethylolpropane?
The CAS number is 77-99-6, formula C6H14O3, molecular weight approximately 134.2 g/mol. These identifiers should match the CoA supplied with each lot.
How is trimethylolpropane supplied in bulk and what is the cost?
TMP is typically supplied as a solid flake or molten/liquid polyol intermediate in bags, drums, or bulk depending on grade. Pricing depends on volume, packaging, and lead time, so request a bulk quote from RawSource rather than relying on spot-price listings.
