Monopotassium Phosphate - China

Brief Overview
Monopotassium phosphate is also known as potassium dihydrogen phosphate (KDP), with the chemical formula of KH2PO4. KDP is a soluble salt of potassium and dihydrogen phosphate, commonly used as a food additive, fungicide, or fertilizer. It is also recognized as safe by the US Food, Drug, and Administration, making it a safe choice for food additives. KDP is an excellent source of potassium and phosphorus. Its buffer properties make it a suitable chemical for fertilizer mixtures and urea and ammonium phosphate, as it can prevent ammonia from escaping by maintaining a relatively low pH and salt index. KDP does not contain any chlorides or sodium, which are harmful to plants, thus making it an excellent fertilizer for all stages of growth. KDP can be observed to be colorless with a crystalline structure and is easily soluble in water with a melting point of 252.6ºC.
Manufacturing Process
Monopotassium phosphate is produced using phosphoric acid and potassium hydroxide. Alternatively, potassium chloride can replace the more expensive potassium hydroxide. However, the removal of hydrogen chloride has to be done, and they can be expelled through various methods such as ion exchangers, long-chain tertiary amines, or distillation with octanes.