<span style="font-size:11.0pt;line-height:115%; font-family:"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family: "Times New Roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font: minor-latin;mso-bidi-font-family:"Times New Roman";mso-ansi-language:EN-US; mso-fareast-language:EN-US;mso-bidi-language:AR-SA">Sulfonation of arylamine Part-5 : Preparation and thermal decomposition of di-<i style="mso-bidi-font-style: normal">m</i>-chloroanilinium sulfate</span>

Abstract

334-338<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">White crystalline solid of di-m-chloroanilinium sulfate (di-m-CIAS) was obtained when m-chloroaniline and cone sulfuric acid were mixed together in the ratio of 1:1 or 2: 1 at room temperature. Thermal decomposition of di-m-C1AS gave two isomeric chloro aminobenzene sulfonic acids (sulfonated products) and kinetics for the same was evaluated using both isothermal and non-isothermal TG data. Di-m-C1AS seems to decompose by N-H bond heterolysis prior to sulfonation.</span