Public Notic


Sodium tripolyphosphate (STPP)

Product Name: sodium tripolyphosphate (STPP);
Other Names: sodium triphosphate, tripoly pentasodium triphosphate
Appearance: White powder or granules.
Formula: Na5P3O10
Boiling Point: 1000 C
Melting Point: 622 C
Specific Gravity: >1.5 (water = 1)
PH: 9.2 - 10.0 (1% solution)
Solubility in water: 150 g/l (25 deg C)
Sodium tripolyphosphate,stpp %
≥96
Purity%
≥57.0
Water insoluble matter %
≤0.10
Fe%
≤0.007
Whiteness %
≥85
PH
9.2--10.0
Granularity %
≤5.0
Apparent density g/ml
0.35-0.99
Content of I type%
5--40
Packing: plastic-lined woven bag, n.w.25kg
Annual output: 30,000 MT
Properties and uses: white powder, mainly used as synthetic detergent, water-softening agent, dispersant of drilling mud and mineral floating, catalyst of organic synthesis.