Sodium thiosulfate anhydrous
Molecular formula:Na2S2O3·5H2O
Molecular weight:248.18
CAS:10102-17-7
Executive standard:GB/T 637-2006
| 质检项目 | 指标值 |
| 含量(Purity),% | ≥99.0 |
| 澄清度试验 | 合格 |
| 碱度(以OH-计)/(mmol/100g) | ≤0.2 |
| 水不溶物,% | ≤0.015 |
| 钙(Ca),% | ≤0.007 |
| 铁(Fe),% | ≤0.004 |
| 砷(As),% | ≤0.002 |
| 硫酸盐及亚硫酸盐 | ≤0.2 |
| 重金属(以Pb计),% | ≤0.002 |
| 硫化物(S),% | ≤0.0007 |
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