Bromocresol Purple sodium salt (CAS 62625-30-3)

Bromocresol purple sodium salt, referred to as bromocresol purple, is a water-soluble dye with widespread applications in laboratory experiments to assess the pH of solutions. Its distinctive bright purple color undergoes a unique change depending on the pH level of the solution, making it a valuable indicator of acidity, alkalinity, and neutrality in various laboratory applications. In scientific research, especially in biochemistry and physiology, bromocresol purple finds extensive use to measure the pH of solutions, allowing researchers to gain insights into the chemical environment of their experiments. Its color change serves as a reliable indicator of the solution′s pH value, ranging from yellow in acidic solutions to purple in neutral solutions and finally to blue in basic solutions. This color shift results from the protonation and deprotonation of the dye molecules, altering their light absorption properties. Beyond pH measurements, bromocresol purple is also employed to assess the concentration of diverse compounds like proteins, carbohydrates, and nucleic acids. Furthermore, it plays a role in enzyme detection, as well as in the isolation and purification of proteins.