Tetrakis [hydroxymethyl] phosphonium sulfate (THPS 75%) used for flame retardant

It is an internationally acknowledged flame-retardants for pure cotton and polyester cotton
Full Name:
Tetrakis [hydroxymethyl] phosphonium sulfate
Abbreviation:
THPS
Structural formula
[(CH2OH)4P]2SO4
CAS Number
#55566-30-8
Quality and Characteristic:

Colorless transparent liquid, miscible in water, hardly soluble in acetone and ethanol. Molecular weight: 406.27

Specification

[(CH2OH)4P]2SO4: 75% MIN

Active phosphorus: 11.0% MIN

Specific gravity: 1.37~1.41g/ml (at 25°C)

Viscosity: 30~45CP (mPa.s) (at 20°C)

PH: 3~4

Packing

In plastic drums. Product Net Weight: 250KG
Usage

Tetrakis[hydroxymethyl] phosphonium sulfate is a biocide effective against micropest in water treatment system, industrial cooling systems, oil field operations, and paper-making industry. The advantage is it will soon degrade to a nontoxic substance immediately after use. Also it can be applied to fabric coating, obviously in improving flame retarding property.
Storage
Store in cool, well-ventilated areas. Keep away from ignition sources, heat and flame. Store in tightly closed containers. Incompatibilities: oxidants and food.