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| CAS号 : | 3051-09-0 |
精确质量 : | 284.05100 |
| 分子式 : | C8H8N6O6 |
logP : | -1.81120 |
| 分子量 : | 284.18600 |
PSA : | 176.82000 |
紫脲酸铵 | |
Murexide | |
3051-09-0 | |
C8H8N6O6 | |
284.18600 | |
176.82000 | |
-1.81120 | |
284.05100 |
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暗红色或紫色粉末
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480.8ºC at 760mmHg
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300 °C
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略溶于水
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Stable at room temperature in closed containers under normal storage and handling conditions.
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Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
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3
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29335995
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S24/25; S22; S36/37
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Xn
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R22
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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>将10g三氧化铬；4g水和40g冰乙酸加热溶解，冷却至30℃，分批慢慢加入16g巴妥酸，控制反应温度45-50℃。加毕，在50℃保温半小时，放置过夜，加入10g冰乙酸，滤集结晶物。取4g结晶物与8g水混合加热溶解，滤去不溶物。滤液移入乙酸铵-冰乙酸溶液中通氨，析出结晶，过滤，用沸乙醇洗涤，得紫脲酸铵。</p> | |
<p>络合指标剂，用于钙、钴、铜、锰、镍、钪、锌等的测定。</p> |
