Food additives
Tetrasodium pyrophosphate, decahydrate

Product name

Tetrasodium pyrophosphate, decahydrate

Specification

Food grade

Molecular formula

Na4P2O·10H2O

CAS

13472-36-1

H.S. CODE

2835299000

Molecular weight

377.0875

Appearance

Colorless transparent crystal

Package

25KG Woven bags or fiber drums


Property

     Colorless sifang crystals or white crystalloid powder. The relative density 2.338. Melting point 252.6 ℃. Soluble in water (90 ℃ for improve g / 100ml canister water), become acidic aqueous solution, 1% linsuanerqingjia solution pH value is 4.6. Not soluble in alcohol. Have ChaoXie sex. Heating and 400 ℃ melted and transparent liquid, after cooling curing is not transparent glass shape partial potassium phosphate.

Application:

    Analytics reagents, such as configuration standard solution, buffer a PH. Also used in the pharmaceutical industry, piezoelectric element and electric optical components production.

Test standard GB 25557-2010


Test items

Specification

Food grade

Appearance

Colorless transparent crystal

Assay

98.0%

Total phosphate

Conform

pH

9.9~10.7

Water insoluble

0.2%

Residue on ignition

38.0~42.0%

Fluoride

50 mg/kg

Arsenic

3 mg/kg

Lead

4 mg/kg

Heavy metals

10 mg/kg

Storage

    Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.

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