Dipotassium Phosphate

Other names: Potassium diphosphate

Harm score: 2 (Derivatives of natural substances)

Potassium diphosphate, also known as E 340(ii) or more commonly as dipotassium phosphate, is a chemical compound used in many industries. It is a white powder or crystalline mass, classified as the potassium salt of phosphate acid. It is characterized by good solubility in water, while being practically insoluble in alcohol.

Potassium diphosphate finds abundant use in the food industry, specifically as a stabilizer, humectant, acidity regulator or emulsifier. It is often added to dairy products such as cheese or yoghurt to balance the pH and prolong shelf life. It is also a common ingredient in instant powdered beverages such as cocoa, coffee or milk, where it helps prevent the powder particles from sticking together. Last but not least, it is used in some types of artificial fertilisers to ensure a sufficient supply of phosphorus and potassium for plants. Also, this chemical compound is used in the cosmetics industry in some skin and hair care products.