Sodium Tripolyphosphate
Appearance: White powder or granular
Molecular formula: Na5P3O10
Type: auxiliary of synthetic wash
Detailed product description
Product: Sodium Tripolyphosphate (STPP)
CAS No.: 7758-29-4
Molecular Formula: Na5P3O10
Molecular weight: 367.86
No. of standard: GB/T 9983-2004
Item | Specifications | ||
Supper class | First class | Second class | |
Na5P3O10, ≥ | 96 | 90 | 85 |
P2O5, % ≥ | 57.0 | 56.5 | 55.0 |
Water insoluble, % ≤ | 0.10 | 0.10 | 0.15 |
Iron (Fe), % ≤ | 0.007 | 0.015 | 0.030 |
pH (10g/l solution) | 9.2-10.0 | ||
Whiteness(W10), % ≤ | 90 | 85 | 80 |
Particle size (passing through 1.00mm Trv-sieve), % ≥ | 95.0 | ||
Appearance | White granula or powder | ||
1.Properties:
White microdot powder with luster, melting point at 622 o C, easily soluble in water, with remarkable chelating ability to some metal ions such as Ca 2+, Mg 2+, can soften hard water, change suspension into solution, slightly alkaline, without causticity.
2.Usage:
Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, and dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic synthesis catalyzer, and used in epuration of petroleum product, gum latex storage, as dispersant, solvent in metal industry and pharmaceutical industry, also widely used in gum synthesis, foodstuff industry, and poultry process.
3.Packing:
Plastic-woven sack with polythene inner bag; Net weight 25kg or 50kg;
