Description

5-[(4-Amino-5-Ethoxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonic Acid is a specialized azo dye intermediate characterized by its distinct molecular structure containing both a sulfonic acid group and a chlorinated benzene ring. This compound is valued for its role in synthesizing high-performance dyes and pigments, offering excellent color fastness and solubility properties. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of acid dyes and direct dyes used for coloring nylon, wool, silk, and paper.
• Textile Industry: Used in the production of dyes that provide strong, wash-fast colors on natural and synthetic fibers.
• Ink Manufacturing: Serves as a precursor for pigments in printing inks, including those for packaging and textiles.
• Specialty Pigments: Employed in the development of high-performance pigments for coatings and plastics where specific color properties are required.
• Research & Development: Utilized in chemical research for developing novel chromophores and studying azo coupling reactions.
• Analytical Reagent: Can be used as a staining agent or a chemical standard in analytical laboratories.

Basic Information

Item	Details
Product Name	5-[(4-Amino-5-Ethoxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonic Acid
CAS No.	84912-14-1
Molecular Formula	C15H15ClN4O4S
Molecular Weight	382.82 g/mol
Synonyms	5-[(4-Amino-5-ethoxy-2-methylphenyl)azo]-2-chlorobenzenesulfonic acid; 2-Chloro-5-[(4-amino-5-ethoxy-2-methylphenyl)azo]benzenesulfonic acid; Benzenesulfonic acid, 2-chloro-5-[(4-amino-5-ethoxy-2-methylphenyl)azo]-; C.I. Acid Orange 156 intermediate; Azo dye intermediate OA-156
EINECS	Contact for details

Quality Control

Our production of 5-[(4-Amino-5-Ethoxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure consistent purity, chemical identity, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics are provided and available upon request to 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 heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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