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KING QUENSON INDUSTRY CO., LTD
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lONG TERM EXPORT. THOUSAND OF MT ERVY MONTH STABLY.
SODIUM TRIPOLYPHOSPHATE (STPP )
Molecular formula: Na5P3O10
Molecular Weight: 367.86
Standard: GB9983-88
Properties:
White odorless granule or powder. Melting point 622 . Easily soluble in water.
It has got salient chelating capacity to ions of Ca and Mg etc. and can soften hard water to make suspension solution become into clear solution; It has got weak alkalinity but no corrosiveness. It is a surfactant, and has got outstanding emulsification to lubricants and fat.
It has different bulk densities, i.e. low density 0.35-0.5g/cm3, medium density 0.51-0.65g/cm3 and high one 0.66-0.9g/cm3.
This product has two crystalline forms, namely Type I (high temperature type) and Type II (low temperature type). The chemical properties of the two types are the same, and the difference between them lies in the thermostability, hygroscopicity, solubility and hydration heat when dissolving.
Tech. Grade
Specification:
Appearance: White odorless granule or powder
Na5P3O10: 94% min
P2O5: 57% min
Water insoluble: 0.1% max
Fe: 0.01% max
Density: 0.40-1.0 g/cm3
PH: 9.2-10.0
Size(Residue on 1.00mm sieve): 5% max
Packing: 25/50kg PP bag/ craft paper bag.
Application: Used mainly as water softener, sequestering agent, and defloculating agent in synthetic/detergent industry. Also used in ceramic, mine, petroleum and paper manufacturing industries.
Food. Grade
Specification:
Na5P3O10: 94% min
P2O5: 57% min
Water insoluble: 0.05% max
Fluoride( as F): 0.003% max
Arsenic (As): 0.0003% max
Heavy metal( as Pb): 0.001% max
Chloride(as Cl): 0.025% max
Sulphate(as S04): 0.4%max
PH: 9.5-10.0
Whiteness: 85% min
Phase I: 10-60%
Packing: 25/50kg PP bag/ craft paper bag.
Application: Used mainly as quality improvement agent in the process of canned food, fruit juice drink, foodstuffs from milk or soybeans.
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 Related Keywords:
STPP
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