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Sodium Tripolyphosphate(STPP)
MolecularFormula: Na2S2O5
CAS NO.:7681-57-4
Appearance: White or yellow crystallinepowder or small crystallization
Specification:
Items | Sodium metabisulphite 64% Tech Grade |
Sodium metabisulphite (As SO2)%, | 64Min |
Fe%, | 0.005Max |
Water-insoluble Matter%, | 0.05Max |
PH | 4.0-4.6 |
Heavy metal(As Pb)% | 0.001Max |
As% | 0.0001Max |
Sodium metabisulphite 64% Food Grade |
|
Sodium metabisulphite (As SO2)% | 64Min |
Fe% | 0.005Max |
Water-insoluble Matter% | 0.05Max |
PH | 4.0-4.6 |
Pb% | 0.002Max |
As% | 0.0002Max |
In the processing of food, it is used as bleaching agent ,antiseptic and osteoporosis agent,
Packing: In 25/50/1000kg pp bag/barrel,25MT/20’FCL.


