Trimethyl Phosphate (TMP) Flame Retardant

Overview

Trimethyl phosphate (TMP) is a colorless, low-viscosity liquid with a high phosphorus content of about 22%. It is used as a halogen-free flame retardant, a solvent and a methylating agent.

Also known as

TMP; Trimethyl orthophosphate; Phosphoric acid trimethyl ester

CAS number

512-56-1

Molecular formula

C3H9O4P

Molecular weight

140.07

Specifications

Test items	Specifications
Appearance	Colorless transparent liquid
Acid value /(mgKOH/g)	≤0.2
Water content /%	≤0.1
Color (APHA, Pt-Co)	≤10
Phosphorus content /%	>21
Chlorine content /%	<0.1
Refractive index /ND20	1.397
Density /(g/cm³)	1.197

Applications

• Halogen-free flame-retardant additive for resins, coatings and battery electrolytes
• Methylating agent and solvent in organic synthesis
• Intermediate for pharmaceuticals and pesticides
• Solvent and catalyst in polymer processing

Packaging

240 kg/drum; 1200 kg/IBC; ISO tank on request.

Storage

Store in tightly closed containers in a dry, clean and well-ventilated place, away from heat and direct sunlight.