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Sodium Tripolyphosphate (STPP)

Sodium Tripolyphosphate(STPP) has got salient chelating capacity to Ca and Mg ions. and can soften hard water to make suspension solution become into clear solution

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  • 01
    Product Name
    Sodium Tripolyphosphate(STPP).
  • 02
    CAS No.
    7758-29-4.
  • 03
    Other Name
    STPP.
  • 04
    H.S. Code
    2835.31.
  • 05
    Chemical Formula
    Na5P3O10.
  • 05
    Properties
    White microdot powder with luster, 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, slightly alkaline, without causticity.

Specification

Indexes

Industrial Grade

Food Grade

Assay Na5P3O10 % ≥

94.0

94.0

P2 O 5 % ≥

57.0

57.0

Water Insoluble Matter % ≤

0.15

0.05

Iron(Fe) % ≤

0.015

0.015

PH value (1% water solution)

9.2-10.0

9.5-10.0

Heavy Metal (as Pb) % ≤

 

0.001

Arsenic (As) % ≤

 

0.0003

Fluoride (F) % ≤

 

0.003

Whiteness % ≥

90

90

Ignition loss

1.0

/

density (g/cm3)

0.35-0.95

0.35-0.95

Phase I

10-30

10-30

 

 

Application

 SODIUM TRIPOLYPHOSPHATE (STPP) 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.

STPP factory

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1. Professional chemical suppliers with rich export experience
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Package

Plastic-woven sack with polythene inner bag; Net weight 25kg, 50kg or 1000kg; keep away from water or moisture, do not pile up in the open air.

 

stpp packing stpp production

 

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