Sodium Tripolyphosphate (STPP) is an inorganic salt
with formula of Na5P3O10,which exists both in granular
The majority of sodium tripolyphosphate is consumed as a component
of commercial detergent,which serves as a
"builder" or industrial jargon for a water softener.
It is also widely used in ceramic,glass,oil,water treatment,
leather tanning,paper and rubber manufacture,etc.
White powder or granular, melting point 622°C, easily soluble in
water. It has got weak alkalinity but no corrosiveness.
Sodium tripolyphosphate has got salient chelating capacity to ions
of Ca and Mg etc., and can soften hard water to
make suspension solution become into clear solution.
Sodium tripolyphosphate is a surfactant, and has got outstanding
emulsification to lubricants and fat.