Description

4-[(4-Amino-7-Sodiosulfo-1-Naphthalenyl)Azo]-7'-[(2-Methyl-1H-Indol-3-Yl)Azo]-1'-Hydroxy[1,2'-Azobisnaphthalene]-3',6-Disulfonic Acid Disodium Salt is a high-purity, complex azo dye intermediate of significant industrial importance. This compound is valued for its specific chromophoric structure, which makes it a critical precursor in the synthesis of specialized dyes and pigments. It is primarily sought by manufacturers in the textile, ink, and specialty chemical sectors requiring precise colorants with specific fastness and solubility properties.

Application

• Primary Intermediate for Azo Dyes: Key building block for synthesizing high-performance, water-soluble azo dyes used in textile coloring.
• Specialty Ink Formulation: Used in the production of inks for jet printing and other applications requiring specific color shades and stability.
• Functional Pigment Synthesis: Serves as a precursor for creating complex organic pigments with enhanced lightfastness and thermal stability.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying azo coupling reactions.
• Analytical Reagents: Potential use as a staining agent or indicator in specific analytical chemistry methodologies.

Basic Information

Product Name	4-[(4-Amino-7-Sodiosulfo-1-Naphthalenyl)Azo]-7'-[(2-Methyl-1H-Indol-3-Yl)Azo]-1'-Hydroxy[1,2'-Azobisnaphthalene]-3',6-Disulfonic Acid Disodium Salt
CAS No.	6428-20-2
Molecular Formula	C35H23N7Na2O10S3
Molecular Weight	859.77 g/mol
Synonyms	Acid Black 210; C.I. 300310; Disodium 4-[(4-amino-7-sulphonato-1-naphthyl)azo]-7'-[(2-methyl-1H-indol-3-yl)azo]-1'-hydroxy-1,2'-azonaphthalene-3',6-disulphonate; 1,2'-Azobisnaphthalene]-3',6-disulfonic acid, 4-[(4-amino-7-sodiosulfo-1-naphthalenyl)azo]-7'-[(2-methyl-1H-indol-3-yl)azo]-1'-hydroxy-, disodium salt; Azo Black 210; [1,2'-Azobis[7-[(2-methyl-1H-indol-3-yl)azo]-1-hydroxy-3,6-disulfo-2-naphthalenolato(4-)]-N7,N1']disodium
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. The material is characterized using advanced analytical techniques including HPLC, UV-Vis, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Soluble, clear solution

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