Description
Specifications Table
Product Name – Thymol blue indicator powder Indicator
Quantity/Pack Size – 25 g
Form – Powder
Grade – Laboratory Reagent
Application – pH indicator (acid-base titration, colorimetric analysis)
Product Overview
Thymol Blue indicator powder is a synthetic pH-sensitive dye widely used in laboratory settings for accurate acid-base titration. This high-purity, laboratory-grade reagent transitions from red to yellow in the pH range of 8.0–9.6, making it ideal for detecting alkaline conditions. Its powdered form ensures long-term stability and easy dissolution in aqueous solutions, providing consistent color changes for reliable endpoint determination. The compound is chemically stable under standard lab conditions, resisting decomposition from light or moderate temperature fluctuations. Due to its sharp color transition, Thymol Blue is preferred in analytical chemistry for precise pH measurements where subtle pH shifts must be visually confirmed. The reagent is compatible with most aqueous systems and does not interfere with common titration reactions, ensuring accurate results without additional calibration. Its non-toxic nature and minimal environmental impact make it a safe choice for routine laboratory applications.
FAQs
1. What is the exact pH range where Thymol Blue changes color?
Thymol Blue transitions from red to yellow between pH 8.0 and 9.6, with a distinct color change at the midpoint for clear endpoint detection.
2. Can this indicator be used in non-aqueous solvents?
The powder is primarily designed for aqueous solutions, though it may show limited solubility in alcohol-based systems with reduced sensitivity.
3. How should Thymol Blue powder be stored for long-term use?
Store in a tightly sealed container away from direct sunlight and moisture at room temperature to maintain stability and prevent degradation.
4. Is this indicator compatible with strong oxidizing agents?
Thymol Blue may decompose or lose efficacy when exposed to strong oxidizers like chlorine or permanganate, affecting its color transition.
5. What alternatives exist for pH ranges outside 8.0–9.6?
For lower pH ranges (1.2–2.8), consider Bromophenol Blue, while Phenolphthalein (8.3–10.0) covers higher alkaline conditions beyond Thymol Blue’s range.
