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 ... ammoniac and used as food additive. The E number for ammonium chloride used as a food additive is E510.Sal ammoniac ...