Description

Sodium 5-[(4-Amino-5-Hydroxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonate is a specialized azo dye intermediate known for its precise chemical structure and reactivity. This compound is critical for manufacturers requiring high-purity, consistent building blocks for synthesizing complex dyes and pigments. It is primarily utilized by the fine chemical and specialty dye industries for producing high-value colorants with specific performance characteristics.

Application

• Primary Intermediate for Azo Dyes: Serves as a key precursor in the synthesis of high-performance azo dyes for textiles, leather, and paper.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments requiring specific shade and fastness properties.
• Research & Development: Employed in chemical R&D for developing novel chromophores and functional dyes.
• Fine Chemical Synthesis: Acts as a building block for creating more complex sulfonated aromatic compounds in pharmaceutical and agrochemical research.
• Analytical Reagent: Can be used as a standard or reagent in analytical chemistry for method development and calibration.

Basic Information

Product Name	Sodium 5-[(4-Amino-5-Hydroxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonate
CAS No.	94166-73-1
Molecular Formula	C13H11ClN3NaO4S
Molecular Weight	363.75 g/mol
Synonyms	5-[(4-Amino-5-hydroxy-2-methylphenyl)azo]-2-chlorobenzenesulfonic acid sodium salt; 2-Chloro-5-[(4-amino-5-hydroxy-2-methylphenyl)azo]benzenesulfonic acid sodium salt; Benzenesulfonic acid, 2-chloro-5-[(4-amino-5-hydroxy-2-methylphenyl)azo]-, sodium salt; Sodium 2-chloro-5-[(4-amino-5-hydroxy-o-tolyl)azo]benzenesulphonate; Azo dye intermediate 94166-73-1; C.I. Azoic Coupling Component (related derivatives)
EINECS	Contact for details

Quality Control

Our production of Sodium 5-[(4-Amino-5-Hydroxy-o-Tolyl)Azo]-2-Chlorobenzenesulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided as standard.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition (Sulfated Ash)	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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