Bromocresol Green Sodium Salt 90% is widely used as a pH indicator in analytical chemistry, exhibiting a distinct color change over a specific pH range, making it suitable for acidbase titrations and indicator solutions. It is commonly employed in laboratory testing, water analysis, and biochemical assays for monitoring pH variations. The compound is also used in electrophoresis and protein analysis as a tracking dye. Additionally, it finds application in research and quality control processes where reliable and visible pH indication is essential.