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Sodium Tripolyphosphate (STPP)
Sodium Tripolyphosphate (STPP)

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Properties: White powder, surface density: 0.35-0.9g/cm3, melting point: 622Celsius degree, free soluble in water, aqueous solut

 Usage:
1, It is used as one of the main auxiliaries agent for synthetic detergent, synergist for soap.
2, Tanning agent for making leather.
3, Softener for water in industry.
4, An effective dispersion agent for suspension treatment of painting, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.
5, Resistance agent of the oil contamination in paper production.

IndexesIndustrial GradeFood Grade
Na5P3O1094.0%Min94.0%Min
P2 O 557.0%Min57.0%Min
Water Insoluble Matter0.15%Max0.04%Max
Iron(Fe)0.015%Max0.006%Max
PH value (1% water solution)9.2-10.09.5-10.0
Heavy Metal (as Pb)---0.001%Max
Arsenic (As)---0.0003%Max
Fluoride (F)---0.003%Max
Whiteness92%Min92%Min
Ignition loss1.0/
density (g/cm 3 )0.35-0.90.35-0.9
Phase I10-3010-30

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