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Sodium Tripolyphosphate (STPP) 94%(Cas no: 7758-29-4) with best price
Product Description
Sodium Tripolyphosphate (STPP) 94%(Cas no: 7758-29-4) with best price
STPP Sodium Tripolyphosphate
Assay:94%;White powder/granule
Type:FOOD Grade,Tech Grade
25 KG/BAGS
Shelf life:2 years
STPP or sodium triphosphate is an inorganic compound with formula Na5P3O10. STPP,Sodium Tripolyphosphate is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid. Sodium tripolyphosphate is produced by heating a stoichiometric mixture of disodium phosphate, Na2HPO4, and monosodium phosphate, NaH2PO4, under carefully controlled conditions. Sodium tripolyphosphate stpp
COA OF SUNTRAN China Preservative Food Grade STPP Sodium Tripolyphosphate
STPP,Sodium Tripolyphosphate Food Grade
| ITEM | STANDARD |
| ASSAY (%) (Na5P3O10) | 95 MIN |
| APPEARANCE | WHITE GRANULAR |
| P2O5 (%) | 57.0 MIN |
| FLUORIDE (PPM) | 10MAX |
| CADMIUM (PPM) | 1 MAX |
| LEAD (PPM) | 4 MAX |
| MERCURY (PPM) | 1 MAX |
| ARSENIC (PPM) | 3 MAX |
| HEAVY MENTAL (AS PB) (PPM) | 10 MAX |
| CHLORIDES (AS CL) (%) | 0.025 MAX |
| SULPHATES (SO42-) (%) | 0.4 MAX |
| SUBSTANCES NOT DISSOLVED IN WATER (%) | 0.05 MAX |
| PH VALUE (%) | 9.5 - 10.0 |
| LOSS ON DRYING | 0.7% MAX |
| HEXAHYDRATE | 23.5% MAX |
| WATER-INSOLUBLE SUBSTANCES | 0.1% MAX |
| HIGHER POLYPHOSPHATES | 1% MAX |
STPP,Sodium Tripolyphosphate Tech Grade
| Items | Standards |
| Assay (%) (Na5P3O10) | 94%MIN |
| Appearance | WHITE GRANULAR |
| P2O5 (%) | 57.0 MIN |
| Bulk density | 0.4~0.6 |
| Iron | 0.15%MAX |
| Temperature rise | 8~10 |
| Polyphosphate | 0.5 MAX |
| PH value(%) | 9.2 - 10.0 |
| Ignition loss | 1.0% MAX |
| 20mesh through | ≥90% |
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