Commodity: Sodium Tripolyphosphate(STPP)
Chemical Formula: Na5P3O10
CAS No: 7758-29-4
Properties: White powder, surface density: 0.35-0.9g/cm3, melting point:622??, free soluble in water, aqueous solution appears acid. It is a kind of inorganic surface active agent.
Packing: 25 or 50 kgs in woven bag lined with plastic bag, 20MT/20’ FCL.
Usage:The water treatment, the food modifier, the water keeping agent.
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Specification
Specification of STPP:
Food Grade
P (as P2O5): 57.0 %min
Assay : 94 % min
PH value: 9.5-10.0
Water insoluble: 0.05 %max
Heavy metal (as Pb): 0.001% max
Iron as Fe : 0.01% max
Chloride (as NaCl) : 0.025% max
Fluoride (F) : 0.003%max
Arsenic as As: 0.003% max
Industrial Grade
P (as P2O5): 57.0 %min
Assay : 94 % min
PH value: 9.2-10.0
Water insoluble: 0.1 %max
Iron as Fe : 0.015% max
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