Description

Disodium 4,4'-Azobisbenzoate is a water-soluble azo compound primarily used as a polymerization initiator. Its value lies in its ability to generate free radicals under mild thermal conditions, enabling controlled initiation in aqueous and emulsion systems. This product is essential for manufacturers in the polymer, specialty chemical, and research sectors seeking efficient and reliable water-phase initiation.

Application

• Primary initiator for emulsion polymerization of vinyl acetate, acrylates, and styrene-butadiene.
• Key component in the synthesis of water-soluble polymers and functional polyelectrolytes.
• Used in the production of specialty adhesives, coatings, and textile finishes requiring aqueous-based processes.
• Employed as a radical source in organic synthesis and macromolecular design within R&D laboratories.
• Suitable for applications in the manufacture of paper chemicals and flocculants.

Basic Information

Product Name	Disodium 4,4'-Azobisbenzoate
CAS No.	19672-24-3
Molecular Formula	C14H8N2Na2O4
Molecular Weight	322.20 g/mol
Synonyms	4,4'-Azobisbenzoic Acid Disodium Salt; Disodium 4,4'-Diazenyldibenzoate; Disodium 4,4'-Azobis(benzoate); Azobisbenzoic Acid Sodium Salt; Water-Soluble Azo Initiator V-501; 2,2'-Azobis(4-carboxybenzoic acid) disodium salt; Wako V-501; VA-501
EINECS	243-216-9

Quality Control

Our Disodium 4,4'-Azobisbenzoate is manufactured under a strict quality management system. Each batch is tested to ensure consistent purity and performance as a polymerization initiator. A comprehensive Certificate of Analysis (COA) detailing assay, purity, and solubility is provided with every shipment to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque storage until use.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Solubility (in Water)	Clear, complete solution
Loss on Drying	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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