Description

5-[(4-Amino-5-Hydroxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonic Acid is a specialized azo dye intermediate characterized by its distinct molecular structure containing amino, hydroxy, and sulphonic acid functional groups. This compound is valued for its role in synthesizing high-performance dyes and pigments with specific color properties and enhanced solubility. It is primarily required by manufacturers in the dye and pigment industry, as well as researchers developing advanced colorants for textiles, inks, and specialty coatings.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of acid dyes and direct dyes for textile fibers like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and coatings, where its structure contributes to color strength and stability.
• Specialty Colorants: Employed in the development of specialized dyes for leather, paper, and food colorants (where compliant with relevant purity standards).
• Research & Development: Utilized in chemical research for studying azo coupling reactions and developing novel chromophores with specific light-absorption properties.
• Functional Dyes: Potential applications in creating dyes for non-textile uses, such as in sensitizers or diagnostic reagents.

Basic Information

Product Name	5-[(4-Amino-5-Hydroxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonic Acid
CAS No.	94166-74-2
Molecular Formula	C13H11ClN4O4S
Molecular Weight	354.77 g/mol
Synonyms	2-Chloro-5-[(4-amino-5-hydroxy-2-methylphenyl)azo]benzenesulfonic acid; 5-[(4-Amino-5-hydroxy-2-methylphenyl)azo]-2-chlorobenzenesulfonic acid; Benzenesulfonic acid, 2-chloro-5-[(4-amino-5-hydroxy-2-methylphenyl)azo]-; C.I. Azoic Coupling Component; Azo dye intermediate 94166-74-2
EINECS	Contact for details

Quality Control

Our production of 5-[(4-Amino-5-Hydroxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonic Acid adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet specified industry requirements. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). Keep away from incompatible materials and sources of ignition. Due to its light-sensitive nature, containers should be opaque or stored in dark conditions.

Specification

Item	Specification
Appearance	Brown to dark brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (Typical 97-99%)
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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