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Food grade sodium tripolyphosphate (STPP)

Category
category：Food additive application
Properties: White powder or fine particles, easily soluble in water, and its aqueous solution is alkaline.
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Parameters

Sodium Tripolyphosphate (STPP)

Sodium Tripoly Phosphate

Chemical formula: Na5P3O10

Molecular weight: 367.88

CAS No.: 7758-29-4

Executive standard: GB/T9983-2004 (industrial grade) GB25566-2010 (food grade)

Properties: White powder or fine particles, easily soluble in water, and its aqueous solution is alkaline.

Uses: In the food industry, it is used as a quality improver for canned food, fruit juice beverages, dairy products, soy milk, etc. It is mainly used for tenderizing canned ham, softening the bean skin in canned broad bean, and can also be used as softener and thickener.

Packing: inner plastic outer woven, net weight 25Kg, 50Kg, 1000Kg per bag, stored in a ventilated and dry place.

[Table unit: %]

No.

Specifications

  

Tech grade

Food grade

1

Phosphorus pentoxide

 ≥

57

57

2

Total content

 ≥

94

94

3

Fe

 ≤

0.01

0.007

4

Water insoluble

 ≤

0.1

0.05

5

Chloride, as CI

 ≤

-

0.025

6

Heavy metal, as Pb

 ≤

-

0.001

7

Arsenic, as AS

 ≤

-

0.0003

8

PH of 1% solution

  

9.2-10.0

9.5-10.0

9

Fluoride(F)

 ≤

-

0.003

10

Sulphate

 ≤

-

0.4

11

Whiteness

  

90

85
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Food grade sodium acid pyrophosphate (SAPP)
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Food Grade Trisodium Phosphate (TSP)

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