Description

4,4'-Dihydroxyazobenzene is an important diazo compound and a versatile chemical intermediate. Its molecular structure, featuring two phenolic groups linked by an azo bridge, makes it valuable for synthesizing dyes, pigments, and functional materials. This compound is primarily sought by manufacturers in the dyestuff, polymer, and specialty chemical industries for its chromophoric and chelating properties.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of azo dyes and organic pigments, particularly for applications requiring high color strength and thermal stability.
• Liquid Crystal Displays (LCDs): Used in the production of dichroic dyes for guest-host LCDs, contributing to display contrast and performance.
• Polymer Stabilizer and Modifier: Acts as a UV absorber or functional monomer to enhance the light-fastness and properties of engineering plastics and coatings.
• Analytical Chemistry Reagent: Serves as a chromogenic agent or complexometric indicator in various spectrophotometric and titrimetric analyses.
• Optical Data Storage: Investigated for use in photoresponsive and photorefractive materials for advanced data storage technologies.
• Chemical Sensor Development: Utilized in the fabrication of sensor materials that change color in response to specific analytes like metal ions or pH.

Basic Information

Item	Detail
Product Name	4,4'-Dihydroxyazobenzene
CAS No.	51437-66-2
Molecular Formula	C12H10N2O2
Molecular Weight	214.22 g/mol
Synonyms	4,4'-Dihydroxyazobenzene; p,p'-Dihydroxyazobenzene; Azobenzene-4,4'-diol; 4-(4-Hydroxyphenylazo)phenol; C.I. Solvent Yellow 7; 1,2-Bis(4-hydroxyphenyl)diazene; Bis(4-hydroxyphenyl)diazene
EINECS	Contact for details

Quality Control

Our 4,4'-Dihydroxyazobenzene is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, color value, and chemical identity. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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