Bromophenol Red Solution, 500ml

Bromophenol red is a pH indicator that changes colour from yellow in acidic solutions to purple in basic solutions, with a transition range of approximately 4.7 to 6.3. It is widely used in analytical chemistry, biological assays, and educational settings to monitor pH changes and identify acidity levels. The sodium salt form is soluble in water.

Key characteristics

• Color change: Yellow (acidic) to purple (basic)
• pH transition range: 4.7–6.3
• Chemical name: 3',3''-Dibromophenolsulfonphthalein
• CAS number: 2800-80-8
• Molecular weight: 512.20 g/mol
• Form: Solid powder, typically reddish-brown 

Common uses

• pH monitoring: Visualizing pH changes in a variety of chemical reactions and solutions
• Titrations: Used as a visual aid in acid-base titrations
• Biological assays: Assessing cell viability and monitoring changes in cell cultures
• Environmental testing: Measuring water quality and detecting acidity levels in environmental analysis
• Colorimetric analysis: Serving as a reagent in assays that rely on color intensity to quantify substances
• Education: Demonstrating the principles of acid-base reactions and indicators in educational labs