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Sodium Tripolyphosphate (STPP)
Synonyms: triphosphoric acid pentasodium salt, pentasodium triphosphate, tripolyphosphate pentasodium, sodium triphosphate, STPP, armofos, empiphos stp-D, freez-gard FP 19, polygon, rhodiaphos H5, thermphos, tripoly Molecular formula: Na5P3O10
Specifications:
INDEX | SPECIFICATION | RESULT | |
ASSAY (NA5P3O10) | 94% MIN | 94.2% MIN | |
P2O5 | 57% MIN | 57.61% MIN | |
FE | 0.007% | 0.007% | |
WATER INSOLUBLE MATTER | 0.1% MAX | 0.1% MAX | |
ARSENIC(AS) | 0.0005% MAX | 0.0004% MAX | |
PH(1% WATER SOLUTION) | 9.2-10.0 | 9.5 | |
WHITENESS | 90 | 92 | |
IGNITION LOSS | 1.0 | 1.0 | |
DENSITY(G/CM3) | 0.35-0.9 | 0.8 | |
PHASE L | 10-30 | 26.3 |
Sodium Tripolyphosphate