Description

3,3'-[Carbonylbis[Imino(2-Methyl-4,1-Phenylene)Azo]]Bisnaphthalene-1,5-Disulphonic Acid is a high-purity, functionalized azo dye intermediate of significant industrial importance. Its precise molecular structure, featuring multiple azo linkages and sulphonic acid groups, makes it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the colorant industry seeking to produce vivid, stable, and application-specific dyes.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance acid dyes and direct dyes for textiles, leather, and paper.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments requiring specific color fastness and thermal stability properties.
• Functional Colorants for Plastics and Polymers: Imparts color to engineering plastics and synthetic fibers where durability is paramount.
• Research & Development: Employed in academic and industrial R&D for developing novel chromophores and studying azo dye chemistry.
• Ink Formulations: Can be utilized in the manufacture of specialized inks for printing applications demanding high color strength.
• Biological Staining Reagents: Potential use as a precursor for histological stains and other laboratory dyes.

Basic Information

Product Name	3,3'-[Carbonylbis[Imino(2-Methyl-4,1-Phenylene)Azo]]Bisnaphthalene-1,5-Disulphonic Acid
CAS No.	25738-24-3
Molecular Formula	C39H26N6O9S2
Molecular Weight	786.78 g/mol
Synonyms	Acid Black 210; C.I. 300310; 3,3'-[Carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bis[1,5-naphthalenedisulfonic acid]; 1,5-Naphthalenedisulfonic acid, 3,3'-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bis-; Bisazo dye intermediate; Tetrasulfonated bisazo compound
EINECS	Contact for details

Quality Control

Our production of 3,3'-[Carbonylbis[Imino(2-Methyl-4,1-Phenylene)Azo]]Bisnaphthalene-1,5-Disulphonic Acid adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark brown to black 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.