Description

4-[(2-Chloro-6-Methylphenyl)Azo]-3-Hydroxy-2-Naphthoic Acid is a specialized azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing high-performance pigments and dyes, offering excellent color properties and stability. It is primarily sought after by manufacturers in the pigments, dyes, plastics, and specialty coatings industries for producing vivid and durable colors.

Application

• Pigment Manufacturing: A key intermediate for the synthesis of high-performance organic pigments, particularly for applications requiring red to violet shades.
• Dye Production: Used in the manufacture of specialized azo dyes for textiles, inks, and leather.
• Plastics and Polymers: Imparts color to engineering plastics, masterbatches, and synthetic fibers.
• Coatings and Paints: Employed in the formulation of industrial and automotive coatings that demand excellent lightfastness and weather resistance.
• Research & Development: Serves as a valuable building block in chemical research for developing new colorants and functional materials.
• Printing Inks: Used in the production of high-quality printing inks for packaging and publications.

Basic Information

Product Name	4-[(2-Chloro-6-Methylphenyl)Azo]-3-Hydroxy-2-Naphthoic Acid
CAS No.	72011-13-3
Molecular Formula	C18H13ClN2O3
Molecular Weight	340.76 g/mol
Synonyms	3-Hydroxy-4-[(2-chloro-6-methylphenyl)azo]-2-naphthoic acid; C.I. Pigment Red 243; 2-Naphthalenecarboxylic acid, 4-[(2-chloro-6-methylphenyl)azo]-3-hydroxy-; 4-[(2-Chloro-6-methylphenyl)azo]-3-hydroxy-2-naphthalenecarboxylic acid; 2-Chloro-6-methylphenylazo-3-hydroxy-2-naphthoic acid; Azo dye intermediate 72011-13-3; PR 243 intermediate
EINECS	Contact for details

Quality Control

Our 4-[(2-Chloro-6-Methylphenyl)Azo]-3-Hydroxy-2-Naphthoic Acid is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with customer specifications. Comprehensive Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are 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	Red to violet powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%, Total impurities ≤ 2.0%

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