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Sodium tripolyphosphate CAS 7758-29-4

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  • 7758-29-4

  • bosschemical

  • 7758-29-4

Sodium tripolyphosphate

CAS 7758-29-4

Alias:SODIUM TRIPOLYPHOSPHATE;STPP FG Granular 20G;Food Grade Sodium Tripolyphosphate;armofos;empiphosstp-d;freez-gardfp19;natriumtripolyphosphat;poly

Molecular formula:Na5O10P3

Molecular weight:367.86

Structural formula:

三聚磷酸钠 结构式


1.Performance and use

Sodium tripolyphosphate, also known as pentasodium phosphate, sodium metaphosphate, STPP, pentasodium tripolyphosphate. White powdery crystals, good fluidity, soluble in water, its aqueous solution is alkaline. Commonly used in food, as moisture retention agent, quality improver, pH regulator, metal chelating agent.


2.Technical indicators

Test items

Standard value

Test data

Appearances

White powder

White powder

Whiteness %

≥85.0

88.40

(P2O5) %

≥56.50

57.11

(Na5O10P3) %

≥90.0

94. 54

Water insoluble substance %

≤0.10

0.021

(Fe) %

<0.015

0.009

PH (1% solution)

9.2-10.0

9.68

1mm test sieve pass rate %

≥95.0

99.50

Bulk density g/cm3

/

0.75


3. Packaging and storage  

Packaging specification: 190kg/drum,which can also be determined according to user needs

During transportation, it is necessary to protect against sunlight, rain, and high temperatures.

The product should be stored in a cool, dark, ventilated place, away from sources of fire.

4. Safety protection

Pay attention to labor protection when handling it and avoid contact with skin, eyes, etc.

After contact, rinse immediately with plenty of water

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