引用本文:
叶敬胜, 吴统立, 王跃华, 贾继铎, 段承朱, 沈滋铭. 电渗析提纯含氯化钠的9-氨基壬酸[J]. 高分子学报,
1964, 6(5): 389-393.
Citation: YEH GEN-SHEN, SHEN ZI-MING, WU TONC-LI, WAN YUE-HUA, JIA JO-DUO, DUAN CHENG-ZHU. DEMINERIZATION OF 9-AMINOPELARGONIC ACID SOLUTION BY ELECTRODIALYSIS USING ION-EXCHANGE MEMBRANES[J]. Acta Polymerica Sinica, 1964, 6(5): 389-393.
Citation: YEH GEN-SHEN, SHEN ZI-MING, WU TONC-LI, WAN YUE-HUA, JIA JO-DUO, DUAN CHENG-ZHU. DEMINERIZATION OF 9-AMINOPELARGONIC ACID SOLUTION BY ELECTRODIALYSIS USING ION-EXCHANGE MEMBRANES[J]. Acta Polymerica Sinica, 1964, 6(5): 389-393.
电渗析提纯含氯化钠的9-氨基壬酸
摘要:
用离子交换膜“Permaplex”,C-20和A-20电渗析法煶纯合氯化钠的9-氨基壬酸,当每100毫升电渗析溶液中合3.5克9-氨基壬酸及1.5克氯化钠时,优惠条件与实验结果如下: 1.中间槽溶液的pH值为7.5—7.8; 2.最大电流密度约为8毫安/厘米~2;电压为65伏; 3.阴极液——氢氧化钠的浓度为0.00135±0.0002N;阳极液——盐酸的浓度为0.0040±0.0002N; 4.电导值为5×10~(-3)欧姆~(-1)厘米~(-1)时,停止电渗析操作。 应用上述条件,用电渗析法除去9-氨基壬酸中氯化钠后,于水中重结晶两次得9-氨 基壬酸纯品,熔点186—189℃,灰分含量不大于0.1％,氯根微量,其收率约93％。
English
DEMINERIZATION OF 9-AMINOPELARGONIC ACID SOLUTION BY ELECTRODIALYSIS USING ION-EXCHANGE MEMBRANES
Abstract:
Desalting the sodium chloride from water solution of 9-aminopelargonic acid by elec-trodialysis．using “Permaplex”C-20 and A-20 ion-exehange membranes has been studied．Experiments indicate the following operating conditions to be the optimum for a bulk solution containing 3.5 gm of 9-aminopelargonic acid and 1.5 gm of sodium chloride in 100 ml of the solution：1． pH value of the solution in central conpartment=7.5--7.8；2．Maximum current density=about 8 mA／cm2；applied voltage=65 V；3．Concentration of anolyte一sodium hydroxide=0.00135±0.0002 N，and concen-tration of catholyte-hydrochloride acid=0.0040±0.0002 N：4．Electrodialysis is stopped when the specific conductivity of the solution reaches to 5×10-3Q-1cm-1．After desalting the sodium chloride by electrodialysis，9-aminopelargonic acid was crystalized twice from water to give the pure product，mp．186—189℃，ash content 0.1％，chloride ion trace．The yield is about 93％．
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