Description

5-Amino-3-[[4-[[4-[[2-Anilino-4-Hydroxyphenyl]Azo]Phenyl]Amino]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a critical precursor for synthesizing high-performance dyes and pigments, particularly those requiring excellent lightfastness and washfastness. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant and durable colorants.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile dyeing and printing.
• Key building block for producing high-performance inks, including those for packaging and security printing applications.
• Used in the manufacture of specialty colorants for coatings, plastics, and leather.
• Potential use as a research chemical in the development of new chromophores and functional dyes.
• Employed in the synthesis of dyes for paper coloration and other industrial applications.

Basic Information

Product Name	5-Amino-3-[[4-[[4-[[2-Anilino-4-Hydroxyphenyl]Azo]Phenyl]Amino]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	83232-40-0
Molecular Formula	C40H28N8O8S2 • xNa
Molecular Weight	Contact for details
Synonyms	Acid Black 210; C.I. 300310; 5-Amino-4-hydroxy-3-[[4-[[4-[(2-hydroxy-5-nitrophenyl)azo]phenyl]amino]phenyl]azo]naphthalene-2,7-disulfonic acid sodium salt; Azo Dye Intermediate 83232-40-0; Sodium 5-amino-3-[[4-[[4-[[2-anilino-4-hydroxyphenyl]azo]phenyl]amino]phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonate
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your technical requirements.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark brown to black powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	Max. 20 ppm

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