Description
Specifications Table
Product Name – Cresol Red Indicator AR
Quantity/Pack Size – 5 g, 25 g
Form – Powder
Grade – AR (Analytical Reagent)
Application – pH indicator, titrations, laboratory analysis
Product Overview
Cresol Red Indicator AR is a high-purity, analytical-grade pH indicator designed for accurate and reliable colorimetric analysis in laboratory settings. This water-soluble powder transitions between yellow (acidic), red (neutral), and purple (alkaline) across a pH range of 7.2 to 8.8, making it indispensable for titrations, buffer solutions, and general pH testing. Its AR-grade certification ensures minimal impurities, providing consistent results for critical applications. The indicator is chemically stable under standard lab conditions, offering long shelf life when stored properly in a cool, dry environment. Compatible with aqueous and alcoholic solutions, Cresol Red is widely used in biochemical assays, environmental testing, and educational demonstrations where precise pH monitoring is required. Its distinct color changes enable easy visual detection without the need for specialized equipment, streamlining workflows in research and quality control. For optimal performance, use distilled or deionized water for preparation and avoid exposure to direct sunlight or moisture.
FAQs
1. What is the pH range for Cresol Red Indicator AR?
Cresol Red transitions from yellow (pH 7.2) to red (pH 8.2) and purple (pH 8.8), covering a range of 7.2–8.8.
2. Is this indicator compatible with non-aqueous solvents?
It is primarily designed for aqueous solutions but can be used in alcoholic solvents with adjusted concentrations.
3. How should I store Cresol Red Indicator AR to maintain its shelf life?
Store in an airtight container away from moisture, light, and heat to prevent degradation.
4. Can Cresol Red replace Phenolphthalein in titrations?
No, Cresol Red has a different pH range (7.2–8.8) compared to Phenolphthalein (8.3–10.0).
5. What alternatives exist for pH indicators in the 7.0–9.0 range?
Thymol Blue (8.0–9.6) or Phenol Red (6.8–8.4) can be used depending on the specific pH requirements.
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