STPP Sodium Tripolyphosphate 1. synergist for soap; water softener 2. emulsification to lubricants and fat 3. tech grade
Sodium Tripolyphosphate (STPP)
Molecular formula: Na5P3O10;Molecular weight: 367.86CAS No.: 7758-29-4;
Synonyms: Pentasodium Triphosphate; Pentasodium Tripolyphosphate; Sodium Phosphate Tripoly; Sodium Triphosphate; Sodium Tripolyphosphate; Stpp; Triphosphoric Acid, Pentasodium Salt
Technical Specifications:
Phase I
No | Specification | Tech grade |
1 | Main content %≥ | 94 |
2 | P2O5 %≥ | 57 |
3 | Water insoluble %≤ | 0.1 |
4 | Iron, as Fe %≤ | 0.015 |
5 | PH of 1% water solution | 9.2-10.0 |
6 | Low density | 0.35-0.5g/cm3 |
Medium density | 0.51-0.65g/cm3 | |
High density | 0.66-0.9 g/cm3 |
Through 16 mesh sieve 95%
Through 35 mesh sieve 90%
Through 100 mesh sieve 40%
Application: 1) As one of the main auxiliaries for synthetic detergent, synergist for soap; water softener. 2) Tanning agent for leather making, auxiliary for dyeing; 3) As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; 4) For ceramics manufacture.
Packaging: 25Kg water-proof PP woven bag or according to customized packing;
Tech grade STPP Sodium Tripolyphosphate white powder