Description

8-(Phenylamino)-5-[[4-[(3-Sulphophenyl)Azo]-1-Naphthyl]Azo]Naphthalene-1-Sulphonic Acid is a high-purity, synthetic azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart vivid and stable coloration, making it a critical precursor in the production of specialized dyes and pigments. It is primarily sought by manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and reliable supply chains for their formulation processes.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, water-soluble azo dyes for textiles and leather.
• Specialty Ink Formulations: Used in the manufacture of inks for jet printing, packaging, and security applications requiring specific color fastness.
• Pigment Production: Acts as a precursor for creating organic pigments used in plastics, paints, and coatings.
• Research & Development: Employed in chemical research for developing new chromophores and studying dye-sensitized systems.
• Analytical Reagents: Can be utilized as a staining agent or colorimetric indicator in certain laboratory analyses.

Basic Information

Product Name	8-(Phenylamino)-5-[[4-[(3-Sulphophenyl)Azo]-1-Naphthyl]Azo]Naphthalene-1-Sulphonic Acid
CAS No.	24758-50-7
Molecular Formula	C32H22N6O6S2
Molecular Weight	650.68 g/mol
Synonyms	Acid Black 210; C.I. 28440; 1-Naphthalenesulfonic acid, 8-(phenylamino)-5-((4-((3-sulfophenyl)azo)-1-naphthalenyl)azo)-; 8-Anilino-5-((4-((3-sulfophenyl)azo)-1-naphthyl)azo)naphthalene-1-sulfonic acid; Benzenesulfonic acid, 3-((4-((8-(phenylamino)-1-sulfo-5-naphthalenyl)azo)-1-naphthalenyl)azo)-; C.I. Acid Black 210
EINECS	Contact for details

Quality Control

Our production of 8-(Phenylamino)-5-[[4-[(3-Sulphophenyl)Azo]-1-Naphthyl]Azo]Naphthalene-1-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color strength, and impurity profiles. Certificates of Analysis (COA) documenting these results are available upon request 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 room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder or 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

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