Potassium phosphate tribasic (CAS 7778-53-2)

Potassium phosphate tribasic, also known as tripotassium phosphate or potassium phosphate, is a chemical compound with the formula K3PO4. This inorganic compound is a highly water-soluble salt that is commonly used in various industrial and research applications due to its properties as a strong base and buffering agent. As a tribasic salt, it consists of three potassium ions and one phosphate ion, enabling it to effectively adjust and maintain the pH of solutions by neutralizing acidic compounds. In research, potassium phosphate tribasic is particularly valued for its role in buffer solutions in biochemistry and molecular biology. It is used to establish and maintain a desired pH environment necessary for enzymatic reactions and other biochemical pathways, ensuring optimal conditions for activity and stability of biological molecules. Additionally, its high solubility and ionic strength make it suitable for use in preparing reagents and in the purification processes of proteins and nucleic acids. Beyond its buffering capacity, potassium phosphate tribasic is used in the synthesis of fertilizers, where it serves as a source of both potassium and phosphate, vital nutrients for plant growth. Its utility is also extended to the food industry as an emulsifier and to improve the texture of processed foods. In non-biological research, it is employed in the manufacture of ceramics and glass.