Sodium Tripolyphosphate (STPP)
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Description
Product: Sodium Tripolyphosphate (STPP)
Chemical Formula: Na5P3O10
CAS No: 7758-29-4
Appearance: White powder or particles
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.
Specifications fo Sodium Tripolyphosphate:
Item |
Food Grade |
Industrial Grade |
P (as P2O5) |
57.0 min |
57.0 min |
Assay |
94 % min |
94 min |
PH value |
9.5-10.0 |
9.2-10.0 |
Water insoluble |
0.05 %max |
0.1max |
Heavy metal (as Pb) |
0.001% max |
- |
Iron as Fe |
0.01% max |
0.015max |
Chloride (as NaCl) |
0.025% max |
- |
Fluoride (F) |
0.003%max |
- |
Arsenic as As |
0.003% max |
- |
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Sodium Tripolyphosphate (STPP)