Industry Food Grade Sodium Tripolyphosphate STPP 7758-29-4
Byname: Pentasodium phosphate
Chemical formula: Na5P3O10
Standard Executed: GB/T9983-2004(INDUSTRIAL GRADE)GB25566-2010(FOOD GRADE)
Throughput: 50000 t/a
Properties of Sodium Tripolyphosphate STPP 7758-29-4:
White microdot powder with luster, melting point at 622°C, easily soluble in water, with remarkable chelating ability to some metal ions such as Ca2+, Mg2+, can soften hard water, change suspension into solution, alkalescent, without causticity.
Uses of Sodium Tripolyphosphate STPP 7758-29-4 :
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.
Packing and storage of Sodium Tripolyphosphate STPP 7758-29-4 :
plastic-woven sack with polythene inner bag, net weight 25kg, 50kg or 1000kg; keep away from water or moisture, do not pile up the open air.
Specification of Sodium Tripolyphosphate STPP 7758-29-4 :
| Specifications |
Industrial Grade |
Food Grade |
| Main contents |
94.0 Min |
94.00 |
| Phosphorus pentoxide |
56.5 Min |
57.0 |
| Water insoluble |
0.15 Max |
0.10 Max |
| Fe |
0.015 Max |
0.015 Max |
| PH value of 1% solution |
9.2-10.0 |
9.4-10.0 |
| Heavy metals, as Pb |
/ |
0.001Max |
| Arsenic,as As |
/ |
0.0003 Max |
| Fluoride, as F |
/ |
0.003 Max |
| Whiteness |
85 Min |
85 Min |
Audited Supplier 
Audited Supplier 
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