Description

7-[2-Methyl-4-(1-Hydroxy-3-Sulfo-6-Amino-2-Naphtylazo)-5-Methoxyphenylazo]-1,3-Naphthalenedisulfonic Acid is a high-purity, polyazo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple sulfonic acid groups and azo linkages, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid, colorfast, and chemically stable colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton and cellulose fiber dyeing.
• Production of Acid Dyes: Used in the manufacture of acid dyes for coloring wool, silk, and nylon with excellent wash and light fastness.
• Specialty Pigment Synthesis: Serves as a precursor for creating complex organic pigments with enhanced thermal and chemical stability for plastics and coatings.
• Functional Dye Manufacturing: Utilized in the production of dyes for specialized applications, including ink-jet inks and security printing.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo dye chemistry and properties.

Basic Information

Item	Details
Product Name	7-[2-Methyl-4-(1-Hydroxy-3-Sulfo-6-Amino-2-Naphtylazo)-5-Methoxyphenylazo]-1,3-Naphthalenedisulfonic Acid
CAS No.	62106-12-1
Molecular Formula	C28H21N5O11S3
Molecular Weight	707.68 g/mol
Synonyms	Acid Black 210; C.I. 28440; 1,3-Naphthalenedisulfonic acid, 7-[2-methyl-4-[(1-hydroxy-3-sulfo-6-amino-2-naphthalenyl)azo]-5-methoxyphenyl]azo]-; 7-[2-Methyl-4-(1-hydroxy-3-sulfo-6-amino-2-naphthylazo)-5-methoxyphenylazo]-1,3-naphthalenedisulfonic acid; Reactive Black 5 precursor; Polyazo dye intermediate AB210; Azo dye intermediate CAS 62106-12-1
EINECS	Contact for details

Quality Control

Our production of 7-[2-Methyl-4-(1-Hydroxy-3-Sulfo-6-Amino-2-Naphtylazo)-5-Methoxyphenylazo]-1,3-Naphthalenedisulfonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting key parameters are provided with each shipment to guarantee traceability and support your quality assurance processes.

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 strong oxidizing agents and incompatible materials. Due to its complex organic structure, prolonged exposure to elevated temperatures or humidity should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Solubility	Soluble in water, alkaline solutions

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