Preparation from hydroxylammonium sulfate of alcoholic hydroxylamine solutions and of oximes, hydroxamic acids and other hydroxylammonium salts via alcoholic hydroxylamine solutions

Abstract From the Canadian patent

Solid hydroxylammonium sulfate is reacted with an alcohol solution of an alkali metal hydroxide or alkoxide to produce an alcoholic hydroxylamine liquid phase and a sulfate-containing solid phase. The liquid phase is used for further reactions such as oximations and hydroxamic acid production, or for the production of other hydroxylammonium salts such as the nitrate per-, chlorate, formate or oxalate. The different bases behave differently with regard to suitable and preferable solvents and temperatures.