Product: STPP; Sodium Tripolyphosphate; Sodium Tripoly Phosphate; Sodium Tri Poly Phosphate; Pentasodium Triphosphate
Chemical formula: Na5P3O10
Molecular weight: 367.86
Standard executed: GB9983-88
CAS No.: 7758-29-4

Properties:
1. Appearance: White microdot powder with luster;
2. Melting point: 622 degree centigrade;
3. Solubility: Easily soluble in water, with remarkable chelating ability to some metal ions such as Ca2+, Mg2+;
4. pH: Slightly alkaline;
5. Without causticity.

Application:
1. Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, as dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, and as preservative agent for paper making, organic synthesis catalyzer;
2. Used in epuration of petroleum product, gum latex storage, as dispersant, solvent in metal industry and pharmaceutical industry;
3. Also widely used in gum synthesis, foodstuff industry, and poultry process.

Packaging: 25kg in plastic woven bag with polythene liner; Stored in ventilated and dry place.