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cliquer ici télécharger ceci
en format PDF SODIUM DITHIONITE
GENERAL
| CAS No. |
7775-14-6
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| Chemical Formula |
Na2 O4 S2 |
| Molecular Weight |
174.10 |
| Parameters |
Specification |
APPEARANCE |
White to Gray-White crystalline powder |
Assay |
85% or 88% or 90% min |
INSOLUBLES IN WATER |
0.1% max |
Na2S2O3 |
1.2% max |
| Na2S2O5 |
5-7% |
| NaHSO3 |
0.5% max |
| Na2CO3 |
0.6-2% |
| HCOONa |
0.5% max |
| Zn |
0.0001% max |
| Pb |
0.0001% max |
| Fe |
0.005% max |
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en format PDF
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