SODIUM METABISULPHITE Extra Pure |
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| HomeLaboratory ChemicalsInorganic Salts |
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| SYNONYMS : SODIUM PYROSULFITE, SODIUM DISULFITE |
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| Article No. |
05935 |
| Grade |
Extra Pure |
| Purity |
96.5% |
| CAS No. |
7681-57-4 |
| Molecular Formula |
Na2S2O5 |
| Molecular Weight |
190.10 |
| H.S. Code |
2832.1000 |
| Shelf Life |
5 Years |
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| Confirming to BP, USP |
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| Specifications |
| Appearance |
White crystalline powder
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| Assay (Iodometry) |
96.5 - 100% |
Assay (Iodometry, as SO2)
|
65 - 67.4% |
| Identity acc. pharma |
Passes test |
pH (5% water)
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3.5 - 5.0 |
| Appearance of solution |
Passes test |
| Insoluble matter in water |
Max 0.025% |
Residual solvents
|
Passes test |
| Chloride (Cl) |
Max 0.02% |
| Thiosulphate (S2O3) |
Max 0.05% |
| Heavy metals (as Pb) |
Max 0.002% |
| Arsenic (As) |
Max 0.0003% |
Iron (Fe)
|
Max 0.002% |
| Lead (Pb) |
Max 0.001 |
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| Packings |
| 00500 500 g |
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| 01000 1000 g |
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| 05000 5000 g |
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| 0025K 25 Kg |
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| 0050K 50 Kg |
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| Safety Information
and Hazard Symbols |
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Symbol: GHS05, GHS07
Signal Word: Danger
Hazardous Statement: H302-H318
Precaution Statement: P280-P305 + P351 + P338 |
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| Revision Date
: 25-Dec-2013 |
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