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7681-57-4 Sodium metabisulfite Sodium pyrosulfite
Product Name: Sodium metabisulfite
CAS: 7681-57-4
MW: 190.11
MF: 2Na.O5S2
Appearance: white powder
Purity: 99%
Top-grade |
First grade |
||
Main content(Na2S2O5) |
96.0 min |
95 |
96.5 |
Fe %( Fe) |
0.005max |
0.01 |
0.002 |
Water-Insoluble |
0.05max |
0.05 |
0.02 |
Arsenic(As) content |
0.0001max |
—— |
0.0001 |
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