Description

4,4'-Azobis(Benzenesulfonic Acid) is a water-soluble azo compound primarily used as a radical initiator. Its value lies in its ability to generate free radicals at moderate temperatures, making it a key component in polymerization processes and other chemical syntheses. This product is essential for manufacturers in the polymer, textile, and specialty chemical industries seeking a reliable and efficient initiator for aqueous systems.

Application

• Polymerization Initiator: A key free radical source for the synthesis of water-soluble polymers, such as polyacrylamides and polyacrylic acids.
• Textile Industry: Used in processes for fiber modification and as a component in dyeing and finishing auxiliaries.
• Paper Manufacturing: Employed in the production of wet-strength resins and other paper chemicals.
• Cross-linking Agent: Facilitates the cross-linking of polymers to enhance mechanical properties and chemical resistance.
• Research & Development: Serves as a model compound or initiator in academic and industrial R&D for new material synthesis.
• Water Treatment Chemicals: A component in the synthesis of flocculants and coagulants used for purifying industrial wastewater.

Basic Information

Product Name	4,4'-Azobis(Benzenesulfonic Acid)
CAS No.	2779-21-7
Molecular Formula	C12H10N2O6S2
Molecular Weight	342.35 g/mol
Synonyms	4,4'-Azobisbenzenesulfonic Acid; 4,4'-Azobis(benzenesulfonic acid); 2,2'-Azobis(benzenesulfonic acid); Azobisbenzenesulfonic Acid; p,p'-Azobis(benzenesulfonic acid); 4,4'-Diazenyldibenzenesulfonic Acid; ABSA; Diazenediylbis(benzenesulfonic acid)
EINECS	220-489-1

Quality Control

Our 4,4'-Azobis(Benzenesulfonic Acid) is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity and performance. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles 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 away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
Water Content (KF)	≤ 2.0 %
Residue on Ignition	≤ 0.5 %
Solubility (in Water)	Clear, yellow solution

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