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Potassium metabisulfite

CAS number : 16731-55-8

Molecular weight :222.32

Molecular formula/chemical symbol : K2S2O5

Description :

 Colorless or white crystals. The odor of sulfur dioxide. Sensitive wetlands. Acid reaction. Contact with the acid, sulfur dioxide escape. Gradually oxidized in air sulfates, faster in the wet air oxidation. Ground into powder burning burning. Soluble in water, insoluble in alcohol. 190 decomposition. Irritation.

USES :

Reductant, the developer, bacterial inhibitors, antioxidants, prepared alkylene sulfate.

Keywords:Surface treatment chemicals

Report :

TEST ITEMS

TEST RESULT

(AR)

(CP)

K2S2O5

≥ 95.0

94.0

Clarity Test

Qualified

Qualified

Water insoluble matter

≤ 0.005

0.02

Chloride

≤ 0.005

0.01

Fe

≤ 0.0005

0.002

As

≤ 0.0001

0.0003

Heavy metals (as Pb)

≤ 0.001

0.002