English name: Sodium Metabisulfite,Sodium Pyrosulfite
Molecular formula: Na2S2O5
Commodity code: 28321000
Appearance: white powder
Uses: widely applied in leather, mineral seperation, textile, food, rubber and dyes industry
Packing: 25kg plastic woven bag/1000kg/1250kg
Industrial sodium pyrosulfite (HG/T 2826—1997)
Specification |
Index |
Sodium pyrosulfite%≥ |
96 |
Water insolubles content % ≤ |
0.05 |
Arsenic% ≤ |
0.0001 |
Ferrum content % ≤ |
0.005 |
food grade Sodium pyrosulfite(GB 1893—86)
Specification |
Index |
Sodium pyrosulfite(in SO2)%≥ |
65 |
Ferrum % ≤ |
0.005 |
Water insolubles% ≤ |
0.05 |
PH |
4.0-4.6 |
Heavy metal(in Pb)% ≤ |
0.002 |
Arsenic% ≤ |
0.0002 |
|