Quality Potassium Carbonate K2CO3 from China. Potassium carbonate (K2CO3) is a white salt, soluble in water (insoluble in ethanol) which forms a strongly alkaline solution. It can be made as the product of potassium hydroxide's absorbent reaction with carbon dioxide. It is deliquescent, often appearing a damp or wet solid. Potassium carbonate is used in the production of soap and glass. Food grade can be used in food additives. Welcome to visit our official website: http://www.yixinchemical.com