Description
Specifications Table
Product Name – 2,6-Dichlorophenolindophenol sodium salt
Quantity/Pack Size – 5 g
Form – Powder
Grade – Analytical Reagent
Application – Redox titrations, biochemical assays
Product Overview
2,6-Dichlorophenolindophenol sodium salt is a highly sensitive analytical reagent widely recognized for its role as a redox indicator in laboratory applications. This water-soluble, deep blue powder undergoes a distinct color change from blue to colorless upon reduction, making it indispensable for precise titrations involving ascorbic acid, sugars, and other reducing agents. The analytical-grade purity ensures minimal interference, delivering accurate and reproducible results in quantitative analyses. Its stability under standard lab conditions and compatibility with aqueous solutions further enhance its utility in biochemical and chemical assays. The reagent’s molecular structure, featuring chlorinated phenol rings, contributes to its selective reactivity, while its sodium salt form improves solubility without compromising performance. Whether used in manual titrations or automated systems, this compound maintains consistency across varied experimental setups. Proper storage in a cool, dry environment preserves its potency, ensuring long-term reliability for critical laboratory workflows.
FAQs
1. What is the shelf life of 2,6-dichlorophenolindophenol sodium salt when stored correctly?
When stored in a tightly sealed container away from light and moisture at room temperature, the reagent remains stable for up to 24 months from the date of manufacture. Degradation may occur if exposed to humidity or prolonged sunlight.
2. Can this reagent be used in non-aqueous solvents, or is it strictly for water-based solutions?
The sodium salt form is optimized for aqueous solubility, but it may dissolve partially in polar organic solvents like methanol or ethanol. For non-aqueous applications, the free acid form of the indicator might be more suitable.
3. How does the color transition of this indicator compare to other redox dyes like methylene blue?
Unlike methylene blue, which transitions from blue to colorless at a higher reduction potential (~+0.53 V), 2,6-dichlorophenolindophenol changes at a lower potential (~+0.22 V), making it ideal for detecting milder reducing agents such as ascorbic acid.
4. Are there any known incompatibilities with common lab chemicals or buffers?
The reagent may react with strong oxidizing agents (e.g., potassium permanganate) or highly alkaline solutions (pH > 10), leading to irreversible color changes or decomposition. It is stable in neutral to slightly acidic buffers (pH 3–7).
5. What alternatives exist if this specific sodium salt is unavailable?
Alternatives include the free acid form of 2,6-dichlorophenolindophenol or other redox indicators like ferroin or phenanthroline, though these may require adjustments to titration protocols due to differing reduction potentials and solubility profiles.
