Feng Bai-cheng, W. Zhuan, Wu Zu-wang
2006
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Journal
Journal of Qingdao University of Science and Technology
Abstract
Sodium hydroxymethanesulfonate was synthesized and the sulfomethylation of 7-amino-4-hydroxynaphthalene-2-sulfonic acid was studied.The optimum conditions of sulfomethylation were n(7-amino-4-hydroxynaphthalene-2-sulfonic acid): n(sodium hydroxymethanesulfonate)=1∶1.15,pH=6.0~6.5,reaction temperature 40 ℃ and reaction time 3 h.The yield of the product was 96%,and its purity was over 95% by HPLC.The product was characterized by IR,MS and ~(1)H NMR.