Description

Sodium 5-Chloro-4-Ethyl-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate is a high-purity azo dye intermediate essential for producing vivid and stable colorants. Its precise molecular structure ensures consistent performance and excellent fastness properties in demanding applications. This compound is a critical raw material for manufacturers in the textile, ink, and specialty chemical industries seeking reliable quality and supply chain security.

Application

• Primary Intermediate for Azo Dyes: Used in the synthesis of high-performance red, orange, and brown azo dyes for textiles and leather.
• Pigment Manufacturing: Serves as a key precursor in the production of organic pigments for inks, coatings, and plastics.
• Specialty Colorants: Employed in the formulation of specialized dyes for paper, food colorants (where approved), and biological stains.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo coupling reactions.
• Industrial Markers: Can be used in the manufacture of colorants for security inks and non-textile marking applications.

Basic Information

Product Name	Sodium 5-Chloro-4-Ethyl-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate
CAS No.	63467-26-5
Molecular Formula	C19H14ClN3NaO4S
Molecular Weight	438.84 g/mol
Synonyms	5-Chloro-4-ethyl-2-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic acid sodium salt; C.I. 15865; Sodium 2-[(2-hydroxy-1-naphthalenyl)azo]-5-chloro-4-ethylbenzenesulfonate; Benzenesulfonic acid, 5-chloro-4-ethyl-2-[(2-hydroxy-1-naphthalenyl)azo]-, sodium salt; Azo dye intermediate 63467-26-5; 1-Naphthol azo derivative sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 5-Chloro-4-Ethyl-2-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color strength, and impurity profiles. Certificates of Analysis (COA) documenting identity, assay, and related substances are available upon request 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 material is hygroscopic (moisture-sensitive); keep the original container tightly sealed 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
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility	Soluble in water, ethanol

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