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.