Description
Specifications Table
Product Name – BROMOCRESOL GREEN SODIUM SALT ACS Quantity/Pack Size – 5 g, 25 g Form – Powder Grade – ACS Reagent Application – pH indicator (3.8–5.4 range)
Product Overview
Bromocresol Green Sodium Salt ACS is a high-purity, water-soluble pH indicator designed for precise acid-base titrations and colorimetric analysis. This ACS reagent-grade dye transitions from yellow to blue within the pH range of 3.8 to 5.4, making it ideal for applications requiring sharp endpoint detection. Its sodium salt form ensures enhanced solubility in aqueous solutions, eliminating the need for organic solvents and simplifying preparation. The compound is chemically stable under standard lab conditions, resisting degradation from light or moderate temperature fluctuations. Its molecular structure, featuring brominated phenol groups, provides distinct color changes that are easily observable even at low concentrations. Compatible with most aqueous buffers, this indicator is free from interfering impurities, ensuring reliable results in quantitative analytical procedures. The ACS certification guarantees adherence to strict purity standards, with minimal heavy metal content and consistent batch-to-batch performance. For researchers requiring reproducible pH measurements, this product offers a cost-effective alternative to liquid indicators without compromising accuracy. Store in a tightly sealed container to prevent moisture absorption and extend shelf life.
FAQs
1. What is the exact pH range where Bromocresol Green Sodium Salt changes color?
The color transition occurs between pH 3.8 (yellow) and pH 5.4 (blue), with a green intermediate at the midpoint.
2. Can this indicator be used in non-aqueous solvents?
It is primarily designed for aqueous systems. For organic solvents, consider Bromocresol Green free acid or alternative indicators.
3. How does the sodium salt form differ from the free acid?
The sodium salt offers higher water solubility and faster dissolution compared to the free acid, which may require ethanol or alkali for preparation.
4. What is the recommended storage condition to maintain stability?
Store in a cool, dry place away from direct sunlight. Keep the container tightly closed to prevent hydration and contamination.
5. Is this product compatible with automated titration systems?
Yes, its sharp color change and stability make it suitable for both manual and automated titration setups.
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