Description

Disodium 4,4'-[(2,4-Diamino-5-Methyl-1,3-Phenylene)Bis(Azo)]Bis[Benzenesulphonate] is a high-purity, water-soluble azo dye intermediate essential for producing vibrant and stable colorants. Its value lies in its consistent molecular structure, which ensures predictable and reproducible color development in demanding industrial processes. This compound is a critical raw material for manufacturers in the textile, leather, paper, and specialty ink industries seeking reliable and high-performance dye synthesis.

Application

• Primary Intermediate for Azo Dyes: Serves as the core building block for synthesizing a range of direct, acid, and reactive azo dyes, particularly for shades of yellow, orange, and brown.
• Textile Dyeing and Printing: Used in the production of dyes for coloring natural and synthetic fibers like cotton, wool, and nylon.
• Leather Finishing: A key component in dye formulations for achieving uniform and durable coloration in leather goods.
• Paper Coloring: Employed in the manufacture of dyes for specialty papers, including packaging and decorative papers.
• Ink Manufacturing: Utilized in the synthesis of pigments and dyes for various printing inks.
• Research & Development: Serves as a standard or experimental compound in chemical research for developing new colorants and studying azo chemistry.

Basic Information

Product Name	Disodium 4,4'-[(2,4-Diamino-5-Methyl-1,3-Phenylene)Bis(Azo)]Bis[Benzenesulphonate]
CAS No.	16423-67-9
Molecular Formula	C26H22N6Na2O6S2
Molecular Weight	624.60 g/mol
Synonyms	Direct Orange 34 (Intermediate); 4,4'-[(2,4-Diamino-5-methyl-1,3-phenylene)bis(azo)]bis[benzenesulfonic acid] disodium salt; C.I. 40215; Benzenesulfonic acid, 4,4'-[(2,4-diamino-5-methyl-1,3-phenylene)bis(azo)]bis-, disodium salt; Azo dye intermediate 16423-67-9; Disodium 4,4'-(2,4-diamino-5-methyl-m-phenylene bisazo) dibenzenesulphonate
EINECS	240-457-6

Quality Control

Our production of Disodium 4,4'-[(2,4-Diamino-5-Methyl-1,3-Phenylene)Bis(Azo)]Bis[Benzenesulphonate] adheres to a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed against rigorous in-house specifications, which typically include identity confirmation, assay (purity), and control of key impurities. A Certificate of Analysis (COA) detailing these results is provided with every 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 incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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