摘要：
以苯为溶剂,采用马来酸酐与3-巯基丙酸合成得到羧乙基硫代丁二酸(CESTA)。当反应时间为7h、反应温度为85℃、n(马来酸酐)∶n(3-巯基丙酸)为1∶1.1时,CESTA收率高达98.8%。测定了CESTA钙螯合值为3119mg/g,并采用鼓泡法测定了其阻垢性能。当CESTA质量浓度为10mg/L时,阻垢率达99%以上。
关键词:
羧乙基硫代丁二酸,
阻垢剂,
阻垢率,
钙螯合值
Abstract:
Benzene being used as solven t,Carboxyethylth iosuccinic acid(CESTA) has been synthesized by the reaction of maleic anhydride with 3-mercaptopropionic acid.When the reaction time is 7 h,reaction temperature is 85 ℃,n(maleic anhydride) ∶n(3-mercaptopropionic acid)=1∶1.1,the yield of CESTA is as high as 98.8%.The calcium chelating capacity of carboxyethylthiosuccinic acid is 3 119 mg/g.The scale inhibition capacity is determined by bubbling method.The inhibiting rate of carboxyethylthiosuccinic acid as scale inhibitor is more than 99%,when the concentration of CESTA is more than 10 mg/L.
Key words:
carboxyethylthiosuccinic acid,
scale inhibitor,
scale inhibition rate,
calcium chelating capacity
中图分类号:
刘福德, 王娟, 王春英, 乌海燕. 羧乙基硫代丁二酸合成及阻垢性能测定[J]. 工业水处理, 2012, 32(6): 72-73.
Liu Fude, Wang Juan, Wang Chunying, Wu Haiyan. Synthesis of carboxyethylthiosuccinic acid and its scale inhibition capacity[J]. INDUSTRIAL WATER TREATMENT, 2012, 32(6): 72-73.