Sodium Metabisulfite

CAS No.:7681-57-4

Appearance: White Powder

MF:Na2S2O5


  • Product Details

Sodium Metabisulfite


Specification

Item

Industry Grade

Purity ( As Na2S2O5)

96.5% min

Sulfur Dioxide( SO2)

65.0% min

Arsenic ( As )

0.0001%max

Heavy metals ( As Pb )

0.0005%max

Selenium (Se )

-

Iron (Fe)

0.003% max

Water insoluble

0.05% max

PH value :

4.0-4.8

 

Usage:

  1. Gold mining:  For bleaching ground wood, as an antichlor.

  2. Medicinal:  Sodium metabisulfite is an antioxidant additive in inject able medicines and is also used as a reducing agent in pharmaceuticals.

  3. Photographic and film industry: For preparing developer solutions, for acidifying fixing baths (photo grade).

  4. Fiber industry:In the sulphitisation of tanning extract.

 

Packing:25kg per Plastic bag sack with waterproof plating (2 layers).

 

The product should be stored in dry and ventilate places, do not be expose the product to air and sunshine.

 

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