印染助剂2011，Vol.28Issue(6)：21-23,27,4.
气相SO3磺化法合成染料中间体3-乙氨基-4-甲基苯磺酸
Synthesis of dye intermediate 3-N-ethyl-4-methylbenzenesulfonic acid by gaseous sulfur trioxide sulfonation method
张广良 1杨效益 1郭朝华 1沈寒晰2
作者信息
- 1. 中国日用化学工业研究院,山西太原030001
- 2. 陕西省石油化工研究设计院,陕西西安710054
- 折叠
摘要
Abstract
Dye intermediate 3-N-ethyl-4-methylbenzenesulfonic acid was synthesized by gaseous sulfur trioxide sultonation method using N-ethyl-2-methylamiline as raw material in falling film sulfonation reactor.The product was characterized by IR, electro spray ionization-mass spectroscopy (ESI-MS) and high performance liquid dhromatography (HPLC), and the results showed that the product was the target product.The neutralization value of sulfonated products was determined by titration method, and the results indicated good reproducibility.The content of 3-N -ethyl-4-methylbenzenesuifonlc acid calculated by the neutralization value was 93.5％ ,which was in accordance with 98.2％ determined by HPLC.Therefore, neutralization value could be used as an index monitored the reaction process and the quality of products.关键词
染料中间体/3-乙氨基-4-甲基苯磺酸/气相SO3磺化法/降膜式磺化反应器/合成Key words
dye intermediate/ 3-N-ethyl-4-methylbenzenesulfonic acid/ gaseous sulfur trioxide sulfonation method/ falling film sulfonation reactor/ synthesis分类
化学化工引用本文复制引用
张广良,杨效益,郭朝华,沈寒晰..气相SO3磺化法合成染料中间体3-乙氨基-4-甲基苯磺酸[J].印染助剂,2011,28(6):21-23,27,4.
