Description

4-Chloro-2-[2-Hydroxy-3-(o-Methoxyphenylcarbamoyl)-1-Naphtylazo]-5-Methylbenzenesulfonic Acid Sodium Salt is a high-purity, complex azo dye intermediate essential for producing vibrant and stable colorants. Its value lies in its precise molecular structure, which enables the synthesis of specialized dyes with excellent lightfastness and chemical resistance for demanding applications. This compound is primarily needed by manufacturers in the dye and pigment industries, as well as by research institutions developing advanced functional materials.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of high-performance red and violet azo dyes and pigments.
• Textile Dyeing: Used in the production of dyes for coloring natural and synthetic fibers, offering good wash and light fastness.
• Ink Manufacturing: A key component in formulating specialty inks for packaging, security printing, and digital applications.
• Pigment Production: Employed in creating organic pigments for plastics, coatings, and masterbatches.
• Research & Development: Utilized in chemical research for developing new chromophores and studying structure-property relationships in dye chemistry.
• Functional Materials: Potential applications in the development of sensors, photonic materials, and other advanced functional products.

Basic Information

Product Name	4-Chloro-2-[2-Hydroxy-3-(o-Methoxyphenylcarbamoyl)-1-Naphtylazo]-5-Methylbenzenesulfonic Acid Sodium Salt
CAS No.	73263-37-3
Molecular Formula	C25H19ClN3NaO6S
Molecular Weight	547.94 g/mol
Synonyms	Sodium 4-chloro-5-methyl-2-[[2-hydroxy-3-[(2-methoxyphenyl)carbamoyl]-1-naphthyl]azo]benzenesulfonate; Benzenesulfonic acid, 4-chloro-2-[2-hydroxy-3-[(2-methoxyphenyl)amino]carbonyl]-1-naphthalenyl]azo]-5-methyl-, sodium salt; C.I. Azoic Coupling Component; Azo dye intermediate 73263-37-3; Sodium salt of a chloro-methyl-hydroxy-naphthyl azo benzenesulfonic acid derivative.
EINECS	Contact for details

Quality Control

Our 4-Chloro-2-[2-Hydroxy-3-(o-Methoxyphenylcarbamoyl)-1-Naphtylazo]-5-Methylbenzenesulfonic Acid Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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