sodium tripolyphosphate hs code

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Product NameHS CODE CAS No. EINECS No. MFMolecular weight Appearance Grade Shelf Life Certification Packing
STPP or sodium triphosphate is an inorganic compound with formula Na5P3O10. STPP, sodium tripolyphosphate food grade is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid. Sodium tripolyphosphate is produced by heating a stoichiometric mixture of disodium phosphate, Na2HPO4, and monosodium phosphate, NaH2PO4, under carefully controlled conditions. Sodium tripolyphosphate sodium tripolyphosphate stpp powder
the specification of sodium tripolyphosphate food grade
STPP
Specifications
NA5P3O10
95% Min
P2O5
56.0%-58.0%
Water Insoluble
010% Max
PH Value
9.5-10.0
F
10ppm Max
As
1ppm Max
LEAD
1ppm Max
cadmium
1ppm max
hg
1ppm max
al
200ppm max
Heavy metals (As Pb)
10ppm Max
Bulk density
0.70-0.80 g/ml
Whiteness
85% Min
80 MESH RESIDUE
25% min
100 MESH RESIDUE
50% min
the specification of sodium tripolyphosphate technical grade
STPP
Specifications
NA5P3O10
94% Min
P2O5
57% MIN
Water Insoluble
010% Max
PH Value
9.2-10.0
density
0.40-1.0 g/CM3
Whiteness
85% Min
the applicaation of sodium tripolyphosphate food grade (STPP)94%:
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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