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Sodium Tripolyphosphate (STPP)

Sodium Tripolyphosphate (STPP)

Product Name: Sodium Tripolyphosphate
Synonyms: pentasodium triphosphate; Pentasodium Tripolyphosphate; Sodium Phosphate Tripoly; STPP; Triphosphoric acid, pentasodium salt; Pent-sodium Phosphate; Sodium triphosphate; Sodium Tripolyphos; sodium phosphate (3:1)
CAS RN.: 7758-29-4
Apperance White powder or granule
EINECS: 231-838-7
Molecular Weight: 367.86413
Molecular Formula: Na5P3O10
Melting Point(℃): 622℃
Water Solubility: 20 g/100 mL (20℃)
Price :



Na5P3O10 94% MIN
P2O5 57% MIN
Fe 0.015% max
Water insoluble 0.1% MAX
PH  VALUE(10g/L) 9.0-10.0
Whiteness 90% MIN
Bulk Density(g/cm3) 0.7MIN

Grade: Food grade, Industrial grade


Food grade: Mainly used as emulsification agent,complexing agent and water retaining agent in food industry.

Industrial grade: Mainly used as the detergent builder,and for the use of petroleum,mining,water-treating industries and so on.

Packing: 25KG/BAG, 50KG/BAG, 1000KG/BAG

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