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Sodium Tripolyphosphate (STPP)
Chemical formula: Na5P3O10
CAS No.: 7758-29-4
EINECS No.: 231-838-7
Packing: 25kg/50kg bag, 1000kg/1200kg jumbo bag. Store in a cool, dry area.
Executive standard: GB/T9984-2008
Property: White particle or powder, easily soluble in water, aqueous solution is alkali. Hydrolyze to orthophosphate in water, complexing with calcium, magnesium, iron and other metal ions and generate soluble complex. As inorganic surfactant, it has certain properties of organic surfactants.
Usage: Used as additive in detergent synthesis, ceramics production, soap synergist. Has strong emulsifying property to lubricant and fat, to adjust the PH value of buffer liquid soap, water softener for industrial water, pretanning agent for leather production, in dyeing additive, paint, kaolin, magnesium oxide, calcium carbonate and other industries as dispersant for the preparation of suspension, as dispersant in drilling fluid, as anti-oil agent in paper-making industry.
Specification:
| Item | Index | ||
| Grade A | Grade B | Grade C | |
Sodium Tripolyphosphate (Na5P3O10) Min | 94% | 90% | 85% |
| phosphorus pentoxide (P2O5) Min | 57% | 56.5% | 55% |
| Whiteness Min | 90% | 85% | 80% |
| Water insoluble matter Max | 0.1% | 0.1% | 0.15% |
| Iron (Fe) Max | 0.007% | 0.015% | 0.03% |
| PH value (1% solution) | 9.2-10 | ||
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