SupplySodiumTriphosphate94%
Product Name: Sodium Tripolyphosphate (STPP)
Chemical formula :Na5P3O10
Molecular weight: 367.864
CAS number: 7758-29-4
EINECS number:231-838-7
Specifications:
ITEM INDEX INDEX
Tech. Grade Food Grade
Na5P3O10 (%): 94Min 94
P2O5 (%): 57Min 57
Insolubles in water (%): 0.15Max 0.05Max
Fe (%): 0.007Max N
Ph (1% solution): 9.2-10 9.5-10
Hey Metal (As Pb) (%): N 0.01Max
Arsenic (As) (%): N 0.0003Max
Fluoride(F) (%): N 0.003Max
Whiteness(%): 90Min 90Min
Density (g/cm3) 0.35-0.9 0.35-0.9
Itype content (%) 10-30 10-30
Usage:
1.In detergents
The majority of STPP is consumed as a component of commercial detergents.It serves as a "builder," industrial jargon for a water
softener. In hard water (water that contains high concentrations of Mg2+ and Ca2+), detergents are deactivated. Being a highly
chargedchelating agent, TPP5- binds to dications tightly and prevents them from interfering with the sulfonate detergent.
2.Food Applications
STPP is a preservative for seafood, meats, poultry, and animal feeds.It is common in food production as E number E451. In foods,
STPP is used as an emulsifier and to retain moisture. Many governments regulate the quantities allowed in foods, as it can
substantially increase the sale weight of seafood in particular. The UnitedStates Food and Drug Administration lists STPP as
"generally recognized as safe.".
3.Other Uses
Other uses (hundreds of thousands of tons/year) include "ceramics, leather tanning(as masking agent and synthetic tanning agent -
SYNTAN), anticaking, setting retarders, flame retardants, paper, anticorrosion pigments, textiles, rubber manufacture,fermentation, antifreeze.
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