Sodium Metabisulfite Industrial Grade

Sodium Metabisulfite Industrial Grade is a white crystalline powder. Sulfur dioxide smell. In the air gradually oxidized to sodium sulfate. Above 150 ℃ decomposition. Soluble in water (64g / 100ml) and glycerol, slightly soluble in ethanol, aqueous solution was acidic.

Product Details

The specific uses of sodium metabisulfite Industrial Grade are as follows:

1): Used as a bleach, mordant, reductant, rubber coagulant, but also for organic synthesis, pharmaceuticals and spices

2): For chromatography reagents, preservatives and reducing agents, for the dye and pharmaceutical industry

3): Sodium metabisulfite Bisulfite has a more reducible role similar to sodium sulfite.


4): The food industry as a bleach, preservatives, loose agents, antioxidants, skin care agents and preservatives.

5): The pharmaceutical industry for the production of chloroform, phenylpropyl sulfone and benzaldehyde. Rubber industry as a coagulant. Dyeing and printing industry as a bleach after the dechlorination agent, cotton cloth additives. Leather industry for leather processing, leather soft, plump, tough, with water, bending, wear and other properties. Chemical industry for the production of hydroxy vanillin, hydroxylamine hydrochloride and so on. Photographic industry used as a developer.

6): Analysis, preservatives, reducing agents, antioxidants.

We can provide different grade sodium metabisulfite Industrial Grade and food grade,Specification as in below table:


Quality Index

Food Grade

Industry Grade

Purity ( As Na2S2O5)

98.0% min

96.0% min

Sulfur Dioxide( SO2)

65.0% min

65.0% min

Arsenic ( As )

0.0002% max


Heavy metals ( As Pb )

0.0005% max


Selenium (Se )

0.0005% max


Iron (Fe)

0.001% max

0.002% max

Water insoluble

0.02% max

0.05% max

PH value :



Remark :

Conformed with FCC V and E 223 Standard

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