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Sodium Metabisulfite
 H.S. Code: 28321000
Molecular Formula: Na2S2O5
Use: Used in drug, food, ferment, rubber, textile, photo, flavor, dyes, tanning and preservative of fruit and vegetable.
Packing: 25kg plastic woven bags
Specification:
Industrial Grade(（HG/T 2826—1997）
Specification |
Standard |
Content(Na2S2O5)%≥ |
96 |
Water-insoluble Matter,%≤ |
0.05 |
Iron(Fe),%≤ |
0.005 |
As%≤ |
0.0001 |
Food Grade (GB 1893—86)
Specification |
Standard |
Content(SO2)%≥ |
65 |
Water-insoluble Matter,%≤ |
0.05 |
Iron(Fe),%≤ |
0.005 |
PH |
4.0-4.6 |
Heavy metals(Pb)%≤ |
0.002 |
As%≤ |
0.0002 |
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