Sodium Metabisulphite; Disodium Pyrosulfite; Disodium Disulfite; Sodium Pyrosulfite
N.F. Functional Use: Antioxidant
Chemical Formula |
Na2S2O5 |
Molecular Weight |
F.W. 190.11 |
CAS # |
7681-57-4 |
Safety Information |
|
Health Hazard |
1 |
Fire Hazard |
0 |
Reactivity |
0 |
Test |
Specification |
Assay (SO2) | 65.0-67.4% |
Assay (Na2S2O5) | 95.0-100.5% |
pH (5% Solution) | 3.5-5.0 |
MAXIMUM LIMITS | |
Chloride (Cl) | 0.05% |
Iron (Fe) | 20 ppm |
Thiosulfate (S2O3) | 0.05% |
Heavy Metals (as Pb) | 20 ppm |
Clarity |
UPS limit |
150 lb |
Storage Information |
MOISTURE SENSITIVE: Keep tightly closed. |
Chemical information and descriptions have been provided by Spectrum Chemicals.