Potassium citrate (also known as tripotassium citrate) is a potassium salt of citric acid with the molecular formula K3C6H5O7. It is a white, hygroscopic crystalline powder. Potassium citrate monohydrate crystalline powder is a chemical compound commonly used as a food additive and dietary supplement. It is also used in the medical field to prevent and treat kidney stones and gout. The powder is highly soluble in water and has a slightly alkaline taste. Its applications include being used as a buffering agent, emulsifier, and flavoring agent in food and beverage products. It is also used in the pharmaceutical industry as a potassium supplement and as a component in electrolyte solutions.