CAS Number
10102-17-7
Formula
Na2S2O3.5H2O
Weight
M: 248,18 EC: 231-867-5 NC: 2832 30 00
| Assay (Iodom.) | 99,5-101,0% |
| pH of 5% solution | 6,0-8,4 |
| MAX. IMPURITIES | |
| Insoluble matter in H2O | 0,005 % |
| Nitrogen compounds (as N) | 0,002 % |
| Chloride (Cl) | 0,02 % |
| Sulphate and Sulphite (as SO4) | 0,1 % |
| Sulphide (S) | 0,0001 % |
| Heavy metals (as Pb) | 0,0005 % |
| Ca | 0,002 % |
| Cd | 0,0005 % |
| Co | 0,0005 % |
| Cr | 0,0005 % |
| Cu | 0,0005 % |
| Fe | 0,0005 % |
| K | 0,005 % |
| Mg | 0,001 % |
| Mn | 0,0005 % |
| Ni | 0,0005 % |
| Pb | 0,0005 % |
| Zn | 0,0005 % |
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