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  Alkalines
Sodium Metabisulfite Cas 7681-57-4
 
Specification
Chemical Analysis
Component
Industrial Grade
Food Grade
Deying Grade
High Purity Grade
Appearance
White or yellowish crystalline powder
Content (Na2S2O5£©
96.5%min
97.0%min
96.5%min
98%min
Water soluble matter
0.05%max
0.03%max
0.05%max
0.02%max
Iron content (Fe)
0.005%max
0.003%max
0.005%max
0.002%max
Arsenic (As)
0.0001%max
0.0001%max
0.0001%max
0.0001%amx
Pb
0.0005%max
0.0002%max
-
0.0003%max
 
 
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