Description
Specifications Table
Product Name – ALIZARINE RED S 1% (w/v) AQUEOUS INDICATOR 100 ml
Quantity/Pack Size – 100 ml
Form – Liquid (Aqueous Solution)
Grade – Laboratory Grade
Application – pH Indicator (pH 4.6-6.0, color change: yellow to red)
Product Overview
Alizarine Red S 1% (w/v) aqueous indicator is a highly sensitive laboratory reagent designed for precise pH detection in chemical analysis. This water-soluble solution contains 1% Alizarine Red S (sodium alizarinsulfonate) dissolved in purified water, providing a stable and reliable indicator for titration procedures. The indicator exhibits a distinct color transition from yellow in acidic conditions (pH 6.0), making it particularly useful for detecting endpoint reactions in complexometric titrations involving calcium and other metal ions. The solution is prepared using analytical-grade dye to ensure consistency and accuracy in results. Its aqueous formulation eliminates the need for additional dissolution steps, offering convenience for routine laboratory work. The 100 ml pack size provides an optimal balance between sufficient quantity for multiple experiments and compact storage requirements. This indicator maintains stability under standard laboratory conditions when stored properly in its original container, protected from direct light exposure.
FAQs
1. What is the exact pH range for Alizarine Red S color change?
The indicator transitions from yellow to red between pH 4.6 and 6.0, with the most noticeable change occurring around pH 5.5.
2. Can this indicator be used for EDTA titrations?
Yes, Alizarine Red S is commonly employed as an adsorption indicator in EDTA titrations for determining calcium and other metal ions.
3. How should I store this aqueous indicator solution?
Store the solution in its original amber bottle at room temperature, away from direct sunlight and heat sources to maintain stability.
4. What is the shelf life of this indicator solution?
When stored properly in unopened condition, the solution remains stable for 24 months from the date of manufacture.
5. Is this solution compatible with organic solvents?
The aqueous formulation is primarily designed for water-based systems and may not perform optimally in purely organic solvent environments.
