Product Name: Sodium metabisulfite
CAS: 7681-57-4
MW:190.11
MF:2Na.O5S2
Appearance:White crystalline powder
Purity:98%
Specification
Items
Standard
Sodium metabisulfite %
98%min
Water insoluble %
0.01max
Fe %
0.002max
As %
0.00006max
Heavy Metals(Pb) %
0.0003max
PH value
4.0-4.6
Application
1. Used as chromatographic analysis reagent, preservative and reducing agent for dyes
2. Used as bleaching agent, mordant, reducing agent, rubber coagulant
3. Printing and dyeing industry used as dechlorination agent after cotton bleaching, cotton cooking additives.
Product packaging