Description

4,4'-Azobis(Phenol) is a high-purity, light-sensitive organic compound widely used as a key intermediate and initiator in polymerization processes. Its value lies in its ability to generate free radicals upon thermal decomposition, making it essential for controlled synthesis in advanced material science. This product is primarily needed by manufacturers in the polymer, specialty chemical, and pharmaceutical industries for applications requiring precise radical initiation.

Application

• As a thermal initiator for the polymerization of vinyl monomers, such as styrene and acrylates.
• As a key intermediate in the synthesis of high-performance polymers and resins.
• In the production of azo dyes and pigments for specialized colorant applications.
• For research and development of novel polymeric materials with specific thermal or mechanical properties.
• In the formulation of cross-linking agents for coatings and adhesives.
• As a standard or reference compound in analytical chemistry and quality control laboratories.

Basic Information

Product Name	4,4'-Azobis(Phenol)
CAS No.	2050-16-0
Molecular Formula	C14H12N2O2
Molecular Weight	240.26 g/mol
Synonyms	4,4'-Dihydroxyazobenzene; 4,4'-Azobisphenol; p,p'-Azobis(phenol); Azobis(4-hydroxyphenyl); 4,4'-(Diazen-1-ium-1,2-diyldi-1,4-phenylene)diol; 1,2-Bis(4-hydroxyphenyl)diazene; Bis(4-hydroxyphenyl)diazene
EINECS	218-114-8

Quality Control

Our 4,4'-Azobis(Phenol) is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC and spectroscopic methods, to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical characteristics is provided with each shipment 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 heat, sparks, and open flame. Due to its light-sensitive nature, prolonged exposure to light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	245 - 255 °C (dec.)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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