Description

3-[(4-Amino-1-Naphthyl)Azo]Naphthalene-2,7-Disulphonic Acid is a high-purity, synthetic organic compound belonging to the azo dye intermediate class, characterized by its disulphonic acid functional groups. This compound is a critical precursor for the synthesis of specialized dyes and pigments, offering excellent color fastness and complexing properties. It is primarily required by manufacturers in the textile, leather, and specialty chemical industries for producing high-value colorants and functional materials.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of acid dyes and direct dyes for coloring wool, silk, nylon, and paper.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for inks, coatings, and plastics.
• Leather Dyeing: Employed in the formulation of dyes for leather processing, providing deep, uniform shades.
• Textile Printing: Acts as a crucial component in dye formulations for textile printing applications.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo coupling reactions.
• Specialty Chemical Synthesis: Functions as a sulfonated intermediate for creating more complex molecules in agrochemical and pharmaceutical research.

Basic Information

Product Name	3-[(4-Amino-1-Naphthyl)Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	85480-82-6
Molecular Formula	C20H15N3O6S2
Molecular Weight	457.48 g/mol
Synonyms	3-[(4-Amino-1-naphthyl)azo]naphthalene-2,7-disulfonic acid; 2,7-Naphthalenedisulfonic acid, 3-[(4-amino-1-naphthalenyl)azo]-; C.I. 37250; Acid Black 107 intermediate; Azo dye intermediate BA; 1-Naphthylamine-4-azo-2,7-naphthalenedisulfonic acid; 4-Amino-1-(2,7-disulfo-3-naphthylazo)naphthalene
EINECS	Contact for details

Quality Control

Our production of 3-[(4-Amino-1-Naphthyl)Azo]Naphthalene-2,7-Disulphonic 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) detailing batch-specific results are provided and available upon request.

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 (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to purple powder
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.