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The Isolation of Orthanilic Acid and Sulfanilic Acid from the Reaction Mixture

Bulletin of the Faculty of Education, Yamaguchi University. Natural science Volume 21 Issue 2 Page 15-18
published_at 1971-09
Title
オルタニル酸,スルファニル酸の分離方法
The Isolation of Orthanilic Acid and Sulfanilic Acid from the Reaction Mixture
Creators Saito Masahiko
Creators Manabe Osamu
Creators Dehara Masataka
Source Identifiers
In a previous report a new method for the preparation of orthanilic acid has been presented. According to the reaction, a mixture of 1 mole of sulfamlc acid and 4 mole of aniline, on heating at 160℃ for 13 hrs, offered about 0.4 mole of orthanilic-,0.3 mole of sulfanilic acid and a small amount of aniline disulfonic acid3. In this report the isolation of orthenilic-, and sulfanilic acid from the reaction mixture is described. The isolation was performed successfully by utilization of the differences of acidity and of solubility of potassium salt between the two isomers. The acidity of orthanilic acid was higher than that of sulfanilic acid and the solubility of potassium orthanilate was 34.8 g and that of sulfanilate was 47.4g per 100 ml of water at 31℃. Orthanilic- and sulfanilic acid of high purities were obtained in 80% yield from the reaction mixture.
Languages eng
Resource Type departmental bulletin paper
Publishers 山口大学教育学部
Date Issued 1971-09
File Version Not Applicable (or Unknown)
Access Rights metadata only access
Relations
[ISSN]0513-1693
[NCID]AN00243950
Schools 教育学部