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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.

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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