Novel pesticide of monosultap ammonium and productive technology thereof


Application Number: 00110693
Application Date: 2000.07.21
Publication Number: 1285145
Publication Date: 2001.02.28
Priority Information:
International: A01N41/00
Applicant(s) Name: Changchun Hengda Industry Co., Ltd.
Address:
Inventor(s) Name: Zhang Xiqian
Patent Agency Code: 22100
Patent Agent: chen hongwei
Abstract The present invention discloses a new pesticide monosultap ammonium and its production process. Said production process includes the following steps: using chloride hydrochloride as raw material, using methyl alcohol as solvent, adding alkaline substance to make neutralization be 15-20 %, heating to 40-45 deg.C, making the above-mentioned material naturally rise temp. to return temp. of methyl alcohol liquor, removing methyl alcohol, cooling, filtering and separating ammonium chloride, adding hydrochloric acid and cooling to zero deg.C, crystallizing to obtain monosultap ammonium and a small quantity of ammonium chloride. Said invention reduces added quantity of alkali substance and hydrochloric acid, adopts methyl alcohol as solvent, makes the sulfonation reaction be homogeneous reaction so as to raise sulfonation yield, raise crystallization rate of monosultap ammonium and reduce its production cost.