Description

3-(4-Anilino-1-Naphthylazo)-2,7-Naphthalenedisulfonic Acid is a specialized organic dye intermediate characterized by its azo and naphthalene disulfonic acid structure. This compound is valued for its ability to impart specific color properties and act as a key building block in the synthesis of complex dyes and pigments. It is primarily required by manufacturers in the dye and pigment, textile, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial precursor in the synthesis of acid dyes, direct dyes, and other azo-based colorants.
• Textile Dyeing: Used in the manufacturing of dyes for coloring natural and synthetic fibers like wool, silk, and nylon.
• Pigment Production: Acts as a key component in the creation of organic pigments for inks, paints, and plastics.
• Research & Development: Employed in chemical research for developing new chromophores and studying dye-sensitized systems.
• Analytical Reagent: Potential use as a staining agent or indicator in specific analytical chemistry applications.
• Specialty Chemical Synthesis: Functions as a building block for more complex sulfonated aromatic compounds.

Basic Information

Product Name	3-(4-Anilino-1-Naphthylazo)-2,7-Naphthalenedisulfonic Acid
CAS No.	57322-42-6
Molecular Formula	C26H18N4O6S2
Molecular Weight	546.57 g/mol
Synonyms	Acid Black 234; C.I. 26370; 2,7-Naphthalenedisulfonic acid, 3-[(4-aminophenyl)azo]-; 3-[(4-Aminophenyl)azo]-2,7-naphthalenedisulfonic acid; 3-(4-Aminophenylazo)-2,7-naphthalenedisulfonic acid; 3-(p-Aminophenylazo)-2,7-naphthalenedisulfonic acid; 4-Aminoazobenzene-2',7'-disulfonic acid; 4-Aminoazobenzene-2,7-disulfonic acid
EINECS	Contact for details

Quality Control

Our production of 3-(4-Anilino-1-Naphthylazo)-2,7-Naphthalenedisulfonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistency, purity, and compliance with customer specifications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is 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). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 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.