| 第 31 卷第 3 期 |  | Vol. 31 No. 3 | | 2001 年 6 月 | Jun 2001 |
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所屬欄目：其它
二硫化鈉法合成巰基乙酸的研究 |
| 符劍剛; 鐘宏(中南大學(xué)化學(xué)化工學(xué)院) |
| 摘 要：概述了巰基乙酸的用途、合成方法 ,研究了二硫化鈉法合成巰基乙酸的主要影響因素。實(shí)驗從硫化鈉、硫磺等基本原料出發(fā) ,首先制得二硫化鈉溶液 ,然后將二硫化鈉同氯乙酸鈉反應合成二硫代甘醇酸 ,最后用硫化鈉溶液還原得到巰基乙酸。試驗探討了反應物料配比、反應溫度、pH值、反應時(shí)間等因素對反應轉化率的影響 ,實(shí)驗結果表明該法的轉化率可達 96 %左右 ,其具體反應條件如下 :硫化鈉∶硫∶氯乙酸鈉 (mol) =1.2∶1.4 4∶1.0 0 ,pH值 =7.5,合成二硫代甘醇酸的溫度為 35℃ ,時(shí)間為 30min |
| 關(guān)鍵詞：巰基乙酸; 二硫化鈉; 合成 |
| 中圖分類(lèi)號：TQ225.27 文獻標識碼：A 文章編號：1009-9212(2001)03-0021-03 |
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| Synthesis of Thioglycolic Acid by Sodium Disulfide Method |
| FU Jian gang; ZHONG Hong （College of Chemistry and Chemical Engineering to Central South University; Changsha 410083; China） |
| Abstract：The application and synthesis of thioglycolic acid were reviewed. Thioglycolic acid was synthesized by sodium disulfide method. In the experiment, sodium disulfide was firstly prepared from sodium sulfide and sulfur, and then (SCH 2COONa) 2 was synthesized with ClCH 2COONa and sodium disulfide, in the last step, sodium sulfide aqueous solution, as a kind of reducer, was used to reduce (SCH 2COONa) 2. The effects of reaction temperature, reactant ratio, reaction time, pH value etc., were investigated th... |
| Key words：thioglycolic acid; sodium disulfide; synthesis |
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收稿日期：2001-03-27
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