Sodium Tripolyphosphate-STPP
1.Formula: Sodium Tripolyphosphate(STPP)
2.Molecular formula: Na5P3O10
3.Standard executed: GB/T9983-2004(technical grade) QB1034-91(food grade)
4.CAS Number: 7758-29-4HS Code: 2835310000
5.Properties:White powder; Melting point 622ºC; Easily soluble in water; It has got salient chelating capacity to ions of Ca and Mg etc.
6.Uses:Used as one of the main auxiliaries for synthetic detergent, synergist for soap; Water softener, tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; As an oil contamination resistance agent in paper production.
7.Packing: 25kg or 50Kg/woven bag lined with PE liner, or 1000 Kg/Container bag; 20-25mt/20 feet container
| No. | Index | Technical Grade |
| 01 | Assay Na5P3O10 ≥ | 94.0 |
| 02 | P2 O 5 ≥ | 57.0 |
| 03 | Water Insoluble Matter ≤ | 0.15 |
| 04 | Iron(Fe) ≤ | 0.015 |
| 05 | PH value (1% water solution) | 9.2-10.0 |
| 06 | Whiteness % ≥ | 90 |
| 07 | density (g/cm 3 ) | 0.70-0.90 |
| 08 | Phase I | 10-30 |
| 09 | Particle Size(1.00mm) % ≥ | 95 |
| 10 | Appearance | White powder |
