Description

Disodium 4,4'-[(2,4-Diamino-1,3-Phenylene)Bis(Azo)]Bis[Benzenesulphonate] is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its value lies in its role as a critical precursor for synthesizing a range of vibrant and stable dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking consistent quality for their colorant production. We supply this intermediate globally, ensuring reliable access for your formulation and research needs.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of direct, acid, and reactive dyes for textiles like cotton, wool, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and coatings, providing excellent color strength.
• Biological Staining: Potential use as a precursor for histological stains in laboratory and diagnostic applications.
• Research & Development: Employed in chemical research for developing new chromophores and functional dyes.
• Specialty Chemical Synthesis: Acts as an intermediate for creating more complex, sulfonated aromatic compounds.

Basic Information

Product Name	Disodium 4,4'-[(2,4-Diamino-1,3-Phenylene)Bis(Azo)]Bis[Benzenesulphonate]
CAS No.	14515-08-3
Molecular Formula	C18H14N6Na2O6S2
Molecular Weight	528.44 g/mol
Synonyms	Direct Black 22 Diazo Component; 2,4-Diaminoazobenzene-4',4''-disulfonic Acid Disodium Salt; C.I. 35435; Disodium 4,4'-[(2,4-diamino-1,3-phenylene)bis(diazene-2,1-diyl)]dibenzenesulfonate; Azoic Diazo Component 48; 4,4'-[(2,4-Diamino-1,3-phenylene)bis(azo)]bis[benzenesulfonic acid] disodium salt; Benzenedisulfonic acid, 4,4'-[(2,4-diamino-1,3-phenylene)bis(azo)]bis-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 4,4'-[(2,4-Diamino-1,3-Phenylene)Bis(Azo)]Bis[Benzenesulphonate] is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure high purity and consistency, meeting the stringent requirements of industrial dye synthesis. Certificates of Analysis (COA) detailing purity, identity, 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 at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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