Description

Disodium 4-Amino-3-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is a high-purity, synthetic organic dye belonging to the azo dye class, specifically engineered for demanding technical applications. Its complex polyazo structure provides excellent color strength and specific affinity for various substrates, making it a critical component in specialized industrial formulations. This compound is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking consistent and reliable colorants.

Application

• Textile Dyeing: Used as a key dye for synthetic fibers like nylon and polyamide, offering good wash and light fastness.
• Ink Manufacturing: Serves as a pigment or dye component in the production of specialty printing inks, including inks for packaging and security printing.
• Leather Coloring: Applied in the dyeing process for leather goods to achieve deep, uniform shades.
• Paper Staining: Employed for coloring high-grade papers and specialty paper products.
• Research & Development: Used as a standard or intermediate in chemical research for developing new dyes and functional materials.
• Specialty Coatings: Incorporated into formulations for coatings where specific colorimetric properties are required.

Basic Information

Product Name	Disodium 4-Amino-3-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	68877-33-8
Molecular Formula	C34H24N10Na2O10S2
Molecular Weight	858.78 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 4-amino-3-{[4-[(2,4-diaminophenyl)diazenyl]phenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate; Polyazo Black Dye; 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt; Azo Dye 68877-33-8; Black 210 (Acid)
EINECS	Contact for details

Quality Control

Our Disodium 4-Amino-3-[[4-[(2,4-Diaminophenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure high purity, consistent color strength, and batch-to-batch uniformity suitable for industrial applications. Standard testing includes identification, assay, and impurity profiling. Certificates of Analysis (COA) detailing all specifications 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 incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

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%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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