It is an internationally acknowledged flame-retardants for pure cotton and polyester cotton and its flame-retarding effect can remain for a long time.

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       MAIN QUALITY TARGETS:

 

  [(CH2OH)4P]2SO4: 75% MIN

 

Active phosphorus: 11.0% MIN

 

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

 

 Viscosity: 30~45CP (mPa.s)      (at 20℃)

 

PH: 3~4

Packing    In plastic drums. Product Net Weight: 250KG

Storage:  Store in cool, well-ventilated areas. Keep away from ignition sources, heat and flame. Store in tightly closed containers. Incompatibilities: oxidants and food.