Description
Specifications Table
Product Name – Alizarine AR Quantity/Pack Size – 25 g, 100 g Form – Powder Grade – AR (Analytical Reagent) Application – Colorimetric analysis, pH indicator, complexometry
Product Overview
Alizarine AR is a synthetic anthraquinone derivative widely recognized for its role as a precise colorimetric reagent in laboratory settings. This high-purity dye, classified under the Analytical Reagent (AR) grade, ensures minimal impurities and consistent performance in sensitive applications. Its deep red crystalline powder form offers excellent solubility in alkaline solutions, making it particularly effective for titration endpoints and pH-dependent color changes. The compound’s ability to form stable complexes with metal ions, especially aluminum and calcium, enhances its utility in quantitative analysis. With a molecular structure optimized for chelation, Alizarine AR provides sharp color transitions that are easily detectable even at low concentrations. Its thermal stability and resistance to photodegradation under standard lab conditions contribute to reliable, reproducible results across multiple experimental cycles. The reagent’s compatibility with common laboratory solvents and buffers further expands its versatility in various analytical protocols.
FAQs
1. What is the solubility profile of Alizarine AR in different solvents?
Alizarine AR shows excellent solubility in alkaline aqueous solutions and ethanol, with limited solubility in cold water. For complete dissolution, gentle warming may be required in some cases.
2. How does Alizarine AR compare to Alizarine Red S in terms of applications?
While both are anthraquinone dyes, Alizarine AR offers higher purity and more consistent color transitions in analytical applications compared to Alizarine Red S, which may contain additional sulfonic groups affecting its behavior.
3. What is the recommended storage condition for maintaining Alizarine AR’s stability?
Store in a tightly sealed container protected from light and moisture at room temperature. Under these conditions, the reagent maintains its stability for at least 24 months from the date of manufacture.
4. Can Alizarine AR be used for quantitative analysis of metal ions?
Yes, it serves as an effective complexometric indicator for metal ions like aluminum and calcium, with detectable color changes occurring at specific concentration thresholds during titration processes.
5. What safety precautions should be observed when handling Alizarine AR?
Use standard laboratory protective equipment including gloves and goggles. Avoid inhalation of dust and ensure proper ventilation, as the powder may cause irritation to respiratory tracts and skin upon prolonged exposure.
