Product: Sodium Metabisulfite
Chemical Formula: Na2S2O5
CAS No.: 7681-57-4
Appearance: Colorless Crystals
Chemical Formula: Na2S2O5
CAS No.: 7681-57-4
Appearance: Colorless Crystals
Packing: In 25kg pp bag,20MT/20’FCL
Usage: Bleaching agent for textile fibres; Colors stripper and dechlorination; preparation of Indigo Vat Dye; solubilizing and acidyfing agent for leather industries; bleaching agent for paper pulps; preservative and sterilisation agent for food industries.
Specification of Sodium Metabisulfite:
|
Analytical item
|
Technique Index
|
|
sodium metabisulfite %
|
64 min
|
|
sodium sulfite
|
3
|
|
sodium sulphate %
|
1.5 max
|
|
sodium chloride %
|
0.1 max
|
|
moisture %
|
0.05 max
|
|
insoluble %
|
0.1 max
|
|
iron
|
10 ppm
|
|
heavy metals
|
10 ppm
|