1. Specifications

Sodium Tripolyphosphate(STPP) 94% Tech Grade

Na5P3O10: 94.0%Min
P2 O 5: 57.0%Min
Water Insoluble Matter: 0.15%Max
Iron(Fe): 0.015%Max
pH value (1% water solution): 9.2-10.0
Whiteness: 92%Min
Ignition loss: 1.0
Density (g/cm3): 0.35-0.9
Phase I: 10-30

2. Properties: White powder, surface density: 0.35-0.9g/cm3, melting point: 622¡ æ , free soluble in water, aqueous solution appears acid. It is a kind of inorganic surface active agent.

3. Application:
Used as one of the main auxiliaries for synthetic detergent, synergist for soap;
Water softener, tanning agent for leather making, auxiliary for dyeing;
As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.;