Common Name: Sodium Metabisulphite
CAS No.: 7681-57-4
Chemical formula: Na2S2O5
Physical appearance: WHITE CRYSTALLINE GRAIN
Quality standard: GB1893-1998
Specification: ITEM
Technical grade
Food grade
Purity (Calculated with Na2S2O5) 97% min
97%min
So2
65%
65%min
Iron (Fe) 0.005% max
0.005%max
Arsenic (As) 0.0001% max
0.0001%max
Heavey mental (Pb) 0.001%
0.001%max
Water insoluble matter
0.005%max
0.05%max
PH
4-4.5
4-4.5
Application: bleaching agent for textile fibres; Colors stripper and dechlorination; preparation of Indigo Vat Dye; solubilizing and acidyfing agent for leather industries; bleaching agent forpaper pulps; preserv -ative and sterilisation agent for food industries
Package: 25kg /50kg compound plastic woven bag with inner polythene liner; 1000kg Jumbo bags, Any other particular requirements to the package can be discussed.
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