Home - STPP-Sodium Tri-Polyphosphate

Sodium Tri-Polyphosphate (STPP)

FormulaNa5P3O10
MW:367.86
Executive Standard:GB9983-88

Properties:White microdot powder with iuster,melting point at 622℃,easily soluble in water,with remarkable chelating ability to some metal ions such as ca2+mg2+can soften hard water,change suspension into solution,alkal-escent,without causticity.
Application:Sodium Tri-Polyphosphate is used as main auxiliary of synthetic wash,soap synergistic agent,water softener,leather pretan-ning 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 pharmaceutlcal industry, STPP is also widely used in gum synthesis,foodstuff industry,and poultry process.
Packing: Sodium Tri-Polyphosphate is packed in 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.

Specifications

Industrial Grade

Main Contents(Na5P3O10)  %≥

95.0

Phosphorus Pentoxide(P2O5)  %≥

57.0

Water Insoluble       %≤

0.1

Iron,as(Fe)             %≤

0.015

Ph of(1% water solution)

9.2-10.0

Heavy metals (as Pb)  %≤

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Arsenic(as As)       %≤

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Fluoride(as F)       %≤

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Particle Size        %≥

95

Whiteness          %≥

90

 Chloride,as C1         %≤

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