Description

Disodium 4-Amino-3-[[4-[[[4-[(2-Amino-4-Hydroxyphenyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate of significant industrial importance. This compound is valued for its role in producing vivid and stable colorants, particularly in applications requiring high-performance pigments and dyes. It is primarily sought by manufacturers in the textile, ink, and specialty coatings industries for its chromophoric properties and structural versatility.

Application

• Textile Dyeing: A key intermediate for synthesizing high-grade, wash-fast azo dyes for natural and synthetic fibers.
• Ink Formulation: Used in the production of colorants for industrial printing inks, including packaging and security inks.
• Pigment Manufacturing: Serves as a precursor for organic pigments used in plastics, paints, and specialty coatings.
• Leather Coloring: Employed in the synthesis of dyes for the uniform and durable coloration of leather goods.
• Paper Coloring: Utilized in the manufacture of dyes for high-quality paper and cardboard products.
• Research & Development: Acts as a standard or starting material in chemical research for developing new chromophores and functional dyes.

Basic Information

Item	Details
Product Name	Disodium 4-Amino-3-[[4-[[[4-[(2-Amino-4-Hydroxyphenyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	43151-71-9
Molecular Formula	C39H26N8Na2O11S2
Molecular Weight	900.84 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 4-amino-3-[[4-[[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate; 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]carbonyl]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt; C.I. Acid Black 210; Black 210; Acid Black WAN
EINECS	Contact for details

Quality Control

Our production of Disodium 4-Amino-3-[[4-[[[4-[(2-Amino-4-Hydroxyphenyl)Azo]Phenyl]Amino]Carbonyl]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Each lot undergoes comprehensive analysis, including HPLC for purity, spectrophotometry for color strength, and rigorous impurity profiling. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory compliance needs.

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 tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark blue to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture (Karl Fischer)	≤ 5.0%
Ash Content	≤ 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.