Description
Specifications Table
Product Name – Bromophenol blue indicator powder
Quantity/Pack Size – 5 g
Form – Powder
Grade – Laboratory Reagent
Application – pH indicator (3.0-4.6 range)
Product Overview
Bromophenol blue indicator powder is a highly reliable synthetic dye used extensively in laboratories for precise pH determination. This laboratory-grade reagent exhibits a distinct color transition from yellow to blue within the pH range of 3.0 to 4.6, making it indispensable for titrations, buffer solutions, and biochemical assays. The powder form ensures long-term stability and ease of preparation, allowing researchers to create standardized indicator solutions as needed. Its non-toxic nature and high purity make it suitable for sensitive applications where accuracy is paramount. The compound is soluble in alcohol and alkaline solutions, forming clear, stable solutions that maintain their efficacy over extended periods. When stored in a cool, dry place away from direct sunlight, bromophenol blue retains its indicator properties without degradation. This product meets stringent quality standards, ensuring consistent performance in critical laboratory procedures. The sharp color change at the specified pH range eliminates ambiguity in endpoint detection, particularly valuable in acid-base titrations and biological research applications.
FAQs
1. What is the exact pH range where bromophenol blue changes color?
The color transition occurs between pH 3.0 (yellow) and pH 4.6 (blue), with a noticeable purple intermediate.
2. Can this indicator be used in non-aqueous solutions?
Yes, bromophenol blue is soluble in alcohol and can be used in alcoholic solutions, though the color intensity may vary.
3. How should I prepare a working solution from this powder?
Dissolve 0.1g in 100ml of 20% ethanol or distilled water, then filter if necessary for clarity.
4. What factors can affect the indicator’s color change?
Temperature extremes, prolonged light exposure, and certain metal ions may alter the transition point or color intensity.
5. Is this product compatible with automated titration systems?
Yes, the powder can be prepared into solutions suitable for both manual and automated titration setups.
