Ammonium chloride: Industry grade, Feed grade, Food grade, Medical grade, etc. Ammonium chloride:Industry grade, Feed grade, Food grade, Medical grade, etc. ... in a mixture of ice, water, and ammonium chloride. Ammonium chloride solutions with ammonia are used as buffer solutions ... ammonium chloride is known as sal ammoniac and used as food additive. The E number for ammonium chloride used as a food ...