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Phosphate
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  Product Detail  

 

Sodium triphosphate (STP), also sodium tripolyphosphate (STPP), or tripolyphosphate (TPP) is an inorganic compound with formula Na5P3O10. It is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid. Mainly used in detergents and foods.

 

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 Food

STPP is a preservative for seafood, meats, poultry, and animal feeds.  STPP is used as an emulsifier and to retain moisture in foods.

 

 

Chemical Name Sodium Tripolyphosphate
Synonyms Penta sodium Triphosphate
Molecular formula Na5P3O10
CAS NO. 7758-29-4
Main contents Na5P3O10 ≥95%
P2O5 56%-59%

CERTIFICATE OF ANALYSIS

Sodium Tripolyphosphate (Food grade)

Cas.No.

7758-29-4

ITEMS

SPECIFICATIONS

RESULT

Appearance

White granular

Na5P3O10 %≥

85.0

95

P2O5     %≥

56.0-58.0

57.6

PH Value (1% solution)

9.1-10.1

9.5

Water Insoluble matter   ≤%

0.1

0.05

Arsenic     ≤%

0.0003

0.0001

Heavy Metals as Pb       ≤%

0.001

0.0008

Fluoride (as F) ≤%

0.002

0.0005

Lead       ≤%

0.0002

0.0001

Mercury       ≤%

/

0.0001

Chloride as CI   ≤%

/

0.0001

Cadmium   ≤%

/

0.0001

Bulk Density g/cm 3

0.4—0.95

0.82
Product Name: STPP CAS No.: 7758-24-9
Categories: Water Retention Agent