Potassium citrate, also known as potassium citrate, tripotassium citrate. Molecular formula: K3C6H5O7·H2O, molecular weight: 324.4, traits: colorless crystal or white crystalline powder, slightly wetted, soluble in water, slowly soluble in glycerin, insoluble in alcohol, salty and cool. Specific gravity: 1.98, use: mainly used as analytical reagents, food additives, alkaline potassium salt in the pharmaceutical industry, used as hypokalemia and alkalized urine, can also be made into high-efficiency compound fertilizer, can also be used in paper making, Gold plating and other industries.