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Trimethyl phosphate

General

Other names

phosphoric acid, trimethyl ester
TMP
methyl phosphate,
trimethoxyphosphine oxide
trimethyl orthophosphate

Molecular formula

(CH₃)₃PO₄

Molar mass

140.08 g·mol⁻¹

Appearance

Colorless liquid

CAS number

512-56-1

Properties

Solubility in water

good

Melting point

-46 °C

Boiling point

197 °C

Hazards

MSDS

External MSDS

EU classification

Harmful substances or preparations (Xn)

NFPA 704

R-phrases

R22,R36/37/38

S-phrases

S36/37,S45

Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

Trimethyl phosphate, (CH₃O)₃PO, is the trimethyl ester of phosphoric acid.

Additional recommended knowledge

How to ensure accurate weighing results every day?

What is the Correct Way to Check Repeatability in Balances?

Essential Laboratory Skills Guide

Applications

Trimethyl phosphate is a methylating agent for nitrogen heterocyclic compounds. It is used as a color inhibitor for fibers (e.g. polyester) and other polymers. This compound is used as a solvent for aromatic halogenations and nitrations and for pesticides and pharmaceuticals.

Category: Organophosphates