Description

2,6-Dichlorophenolindophenol is a redox indicator dye widely used in analytical chemistry and biochemistry. Its primary value lies in its distinct color change upon reduction, making it an essential reagent for quantifying ascorbic acid (Vitamin C) and other reducing agents. This high-purity compound is critical for quality control laboratories in the pharmaceutical, food & beverage, and nutraceutical industries, as well as for research institutions conducting biochemical assays.

Application

• Vitamin C (Ascorbic Acid) Assay: The standard and most common application, used as a titrant or endpoint indicator in volumetric analysis for determining Vitamin C content in foods, beverages, and pharmaceutical products.
• Biochemical Research: Employed as an electron acceptor in studies of enzyme activity, particularly for dehydrogenases, and in measuring the reducing capacity of biological samples.
• Analytical Chemistry Standard: Serves as a primary standard or reference material for calibrating analytical methods and validating assay procedures due to its well-defined redox potential.
• Food & Beverage Quality Control: Used to monitor and ensure the declared Vitamin C content and antioxidant levels in juices, fortified foods, and dietary supplements.
• Pharmaceutical Testing: Integral to pharmacopeial methods (e.g., USP, BP, EP) for the assay of ascorbic acid in raw materials and finished dosage forms.
• Diagnostic Reagent Manufacturing: A key component in the formulation of clinical diagnostic kits and strips designed to measure reducing substances.

Basic Information

Product Name	2,6-Dichlorophenolindophenol
CAS No.	956-48-9
Molecular Formula	C12H7Cl2NO2
Molecular Weight	268.10 g/mol
Synonyms	2,6-Dichloroindophenol; Dichlorophenolindophenol; DCPIP; Tillmans' reagent; 2,6-Dichloro-4-[(4-hydroxyphenyl)imino]cyclohexa-2,5-dien-1-one; Sodium 2,6-dichlorophenolindophenolate (salt form); Vitamin C indicator
EINECS	213-487-4

Quality Control

Our 2,6-Dichlorophenolindophenol is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability for critical analytical applications. The product undergoes rigorous testing, including identity confirmation, purity assay, and impurity profiling. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment, supporting compliance with relevant pharmacopeial and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive; prolonged exposure to light should be avoided to maintain stability and potency.

Specification

Item	Specification
Appearance	Dark green to bronze crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
Loss on Drying	≤ 1.0 %
Residue on Ignition	≤ 0.1 %
UV-Vis Absorption	Characteristic peak at ~600 nm (oxidized form)
Solubility	Soluble in water and ethanol

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.