Description

Disodium 4-Amino-3-[[4-[(2,4-Diamino-5-Methylphenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is a high-purity, synthetic organic dye belonging to the azo dye class, valued for its strong and stable color properties. Its complex polyazo structure provides excellent chromophoric strength, making it a critical component for demanding coloration applications where consistency and performance are paramount. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking reliable and vibrant colorants.

Application

• Textile Dyeing: Primary application for dyeing natural and synthetic fibers, including cotton, wool, and nylon, offering good wash and light fastness.
• Ink Formulation: Used in the production of industrial inks for packaging, printing, and coding, providing intense color value.
• Specialty Coatings: Incorporated into coatings for plastics, leather, and paper to achieve specific, durable color effects.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its affinity for specific tissue structures.
• Research & Development: Serves as a key intermediate or reference standard in chemical research for developing new dyes and pigments.

Basic Information

Product Name	Disodium 4-Amino-3-[[4-[(2,4-Diamino-5-Methylphenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	93940-04-6
Molecular Formula	C29H22N10Na2O8S2
Molecular Weight	764.71 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 4-amino-3-{[4-({2,4-diamino-5-methylphenyl}diazenyl)phenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulphonate; Polyazo Black Dye; 93940-04-6; Azo Dye 300310; Textile Black 210
EINECS	Contact for details

Quality Control

Our production of Disodium 4-Amino-3-[[4-[(2,4-Diamino-5-Methylphenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and spectrophotometry for color strength verification, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) detailing all quality parameters are provided with each shipment.

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 (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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