| 对氯苯磺酰肼的合成工艺改进 |
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| 引用本文： | 苏砚溪,杨纪清,郝艳霞. 对氯苯磺酰肼的合成工艺改进[J]. 化工时刊, 2001, 15(8): 37-39 |
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| 作者姓名： | 苏砚溪 杨纪清 郝艳霞 |
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| 作者单位： | 1. 河北师范大学化学系,石家庄,050091
2. 石家庄职业技术学院化工系,石家庄,050081 |
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| 摘 要： | 以氯苯为原料，合成了对氯苯磺酰氯。在氯磺化反应中引入了四氯化碳溶剂，反应后期加入氯化钠。用正交实验确定了最佳原料配比：n(氯苯）:n(氯磺酸):n(氯化钠）＝1．00：3．00：0．04，改进后对氯苯磺酰氯收率由80．57％提高到87．68％。然后与水合肼反应生成对氯苯磺酰肼，产品收率达91．61％，本工艺原料利用率高，废弃物排放量小。
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| 关 键 词： | 对氯苯磺酰肼 对氯苯磺酰氯 氯苯 氯磺化 四氯化碳 水合肼 合成 工艺 发泡剂 |
| 修稿时间： | 2001-07-12 |
Improved Technology for Synthesis of p - Chlorobenzene Sulfonhydrazide |
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| Su Yanxi Yang Jiqing Hao Yanxia. Improved Technology for Synthesis of p - Chlorobenzene Sulfonhydrazide[J]. Chemical Industry Times, 2001, 15(8): 37-39 |
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| Authors: | Su Yanxi Yang Jiqing Hao Yanxia |
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| Abstract: | 4 - Chlorobenzene sulfonyl chloride was synthesized with chlorobenzene as raw material. In the reaction of chlorosulfonation, carbon tetrachloride was used as solvent, adding the sodium chloride in later stage reaction. The optimal molar ratio of reactants was chlorobenzene: chlorosulfonic acid: sodium chloride = 1.00:3.00:0.04. In this improved technology, the yield of product was raised from 80.57% to 87.68% . Then, p - chlorobenzene sulfonhydrazide was synthesized with p - chlorobenzene sulfonyl chloride and hydrazine hydrate as raw material. The yield of product was 91.61 % . U-tilization ratio of raw material is higher, and waste material is lower. |
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| Keywords: | P - chlorobenzene sulfonhydrazide P - chlorobenzene sulfonyl chloride Chlorobenzene Carbon tetrachloride Hydrazine hydrate |
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