Description
Specifications Table
Product Name – BROMOPHENOL BLUE 0.1% w/v ALCOHOLIC SOLUTION
Quantity/Pack Size – 125 ml
Form – Liquid (Alcoholic Solution)
Grade – Laboratory Reagent
Application – pH indicator, titrations, biochemical assays
Product Overview
Bromophenol Blue 0.1% w/v alcoholic solution is a highly sensitive pH indicator designed for precise laboratory applications. This lab-grade reagent transitions from yellow to blue across a pH range of 3.0 to 4.6, making it indispensable for titrations, protein assays, and biochemical research. The alcoholic base ensures stability and longevity, preventing microbial growth while maintaining consistent performance. Its low concentration (0.1%) allows for accurate colorimetric detection without interfering with reaction kinetics. The solution is filtered and standardized to eliminate particulates, ensuring clarity and reliability in spectrophotometric measurements. Compatible with most aqueous and organic solvent systems, it integrates seamlessly into existing protocols. The 125 ml pack size offers an optimal balance between bulk efficiency and freshness, reducing waste in frequent-use scenarios. Store at room temperature in a tightly sealed container to prevent evaporation and contamination. This solution meets stringent quality controls for reproducibility in critical experiments.
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 distinct green intermediate at pH 3.8-4.0.
2. Can this solution be used in non-aqueous titrations?
Yes, the alcoholic base makes it suitable for titrations in organic solvents like ethanol, methanol, or acetone-based systems.
3. How does the alcoholic solvent affect the indicator’s stability?
The ethanol base inhibits microbial growth and reduces degradation from moisture, extending shelf life compared to water-based indicators.
4. What alternatives exist for higher pH range indications?
For pH ranges above 4.6, consider Phenol Red (pH 6.8-8.4) or Thymol Blue (pH 8.0-9.6) as complementary indicators.
5. What precautions should be taken during storage?
Keep the bottle tightly capped to prevent alcohol evaporation and store away from direct sunlight to avoid photodegradation of the dye.
