Sodium Tripolyphosphate (STPP)
Sodium Tripolyphosphate (STPP)
Description: Sodium Tripolyphosphate is a white powder.
Synonym: STPP, Pentasodium Triphosphate, Sodium Tripolyphosphate Anhydrous
Formula: Na5P3O10
Molecular weight: 367.9
CAS number: 7758-29-4
CAS Index name: Triphosphoric Acid, Pent sodium Salt
Grade: Food grade, Free from any harmful and toxic substance.
Specification:
Appearance:White powder
Na5P3O10:95.0% Min
P2O5:57.0% Min
Fluorides (As F) :10 ppm Max
Pb: 1ppm max
As:1 ppm Max
Cd: 1ppm max
Hg: 1ppm max
Heavy metal (as pb):10 ppm Max
Higher polyphosphates: 1ppm max
Water insoluble:0.05% Max
Ph (1% of aqueous Solution):9.5-10.0
Chlorides (As Cl-­) :0.025% Max
Sulphates (As SO42-) :0.4% Max
Whiteness :85% Min
Loss on drying (1hr.
Lead (Pb):5 ppm max
Particle size:
STPP powder: 80% min pass mesh 100.
STPP common granular: mesh 20-100.
STPP solid granular: mesh 16-80.
Uses: A wide variety of processed food products Including dairy and meat processing.
Storage:Cool and dry
Label Declaration or marks of package: Sodium Tripolyphosphate Food grade
Net weight/gross weight,Batch No., Manufacturing date and expiry date,Country of origin
Shelf Life: 3 years
Main
One
Packing: N.W. 25kgs/bag, Inner PE bag two layers; Outer PP woven bag or paper bags.