Description

Disodium 7-[[4-[(4-Amino-o-Tolyl)Azo]Phenyl]Azo]Naphthalene-1,3-Disulphonate is a high-purity, synthetic azo dye intermediate essential for producing vibrant and stable colorants. This compound matters for its role as a key building block in the synthesis of specialized dyes and pigments, offering excellent chromophore properties and sulfonate groups for enhanced solubility and application performance. Industrial manufacturers in the textile, ink, and specialty chemical sectors require this precise intermediate to develop high-quality, consistent color products for demanding applications.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical precursor in the synthesis of acid dyes, direct dyes, and reactive dyes used in textile coloring.
• Textile Industry: Used in the dyeing and printing of natural and synthetic fibers, including wool, silk, nylon, and paper.
• Ink Manufacturing: Employed in the production of inks for various applications, including writing inks, inkjet inks, and specialty printing inks.
• Pigment Production: Acts as a starting material for creating lake pigments and other colorants used in paints, plastics, and coatings.
• Biological Staining: Potential use as a staining agent or chromophore in biological and histological applications due to its azo structure.
• Research & Development: Utilized in chemical research for developing new dye molecules and studying azo coupling reactions.

Basic Information

Product Name	Disodium 7-[[4-[(4-Amino-o-Tolyl)Azo]Phenyl]Azo]Naphthalene-1,3-Disulphonate
CAS No.	67786-18-9
Molecular Formula	C23H16N6Na2O6S2
Molecular Weight	582.52 g/mol
Synonyms	Acid Orange 67; C.I. 14172; 7-[[4-[(2-Amino-5-methylphenyl)azo]phenyl]azo]naphthalene-1,3-disulfonic acid disodium salt; Disodium 7-[(4-[(2-amino-5-methylphenyl)azo]phenyl)azo]-1,3-naphthalenedisulfonate; Azo Dye Intermediate 67786-18-9; 1,3-Naphthalenedisulfonic acid, 7-[[4-[(2-amino-5-methylphenyl)azo]phenyl]azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our Disodium 7-[[4-[(4-Amino-o-Tolyl)Azo]Phenyl]Azo]Naphthalene-1,3-Disulphonate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with industry specifications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance protocols.

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 incompatible materials and sources of ignition. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in water

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