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| CAS号 : | 79-40-3 |
精确质量 : | 119.98200 |
| 分子式 : | C2H4N2S2 |
logP : | 0.95920 |
| 分子量 : | 120.19700 |
PSA : | 116.22000 |
二硫代乙酰胺 | |
ethanedithioamide | |
79-40-3 | |
C2H4N2S2 | |
120.19700 | |
116.22000 | |
0.95920 | |
119.98200 |
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1.775
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橙色至棕色结晶粉末
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106.2ºC
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252.1ºC at 760 mmHg
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≥300 °C(lit.)
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1.523 g/cm3
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Stable.
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Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
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RP1575000
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29309070
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3
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S36/37
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Xn
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R22; R36/37/38
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2933990090
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2933990090. 其他仅含氮杂原子的杂环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0% | |
2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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<p>1.边搅拌边将浓氨水加到浓的硫酸铜溶液中，直到沉淀出来的氢氧化铜重新溶解。冷却后，在不断搅拌下慢慢加入氰化钾溶液至蓝色消失。然后向反应液中通入由硫化钠和盐酸反应制得的硫化氢气。控制硫化氢∶氰气＝3∶ 1，搅拌均匀后彻底冷却，静置，过滤。所得结晶用冷水洗涤，经乙醇重结晶，得成品二硫代乙二酰胺。过程反应式如下：</p> | |
<p>用于测定铜、钴、镍的沉淀剂。铋、钴、铜、镍、铂、钯的点滴试验试剂。维生素C溶液的稳定剂。</p> |
