Description

Sodium 3-[[4-[(4-Ethoxyphenyl)Azo]-1-Naphthyl]Azo]Benzenesulphonate is a high-purity azo dye intermediate essential for producing vivid and stable colorants. This compound matters for its role in synthesizing specialized dyes with excellent light and wash fastness properties. Industries such as textile manufacturing, ink production, and specialty chemical synthesis need this reliable intermediate to ensure consistent color quality and performance in their final products.

Application

• Primary intermediate for the synthesis of high-performance azo dyes and pigments used in textile coloring.
• Key component in manufacturing printing inks for packaging, publications, and security applications.
• Used in the production of specialty colorants for plastics, coatings, and leather.
• Acts as a precursor in research and development of novel functional dyes for optical and electronic applications.
• Employed in the formulation of biological stains and indicators for laboratory and diagnostic use.
• Utilized in the creation of color filters and other light-absorbing materials.

Basic Information

Product Name	Sodium 3-[[4-[(4-Ethoxyphenyl)Azo]-1-Naphthyl]Azo]Benzenesulphonate
CAS No.	72765-52-7
Molecular Formula	C24H17N4NaO4S
Molecular Weight	480.47 g/mol
Synonyms	Benzenesulfonic acid, 3-[[4-[(4-ethoxyphenyl)azo]-1-naphthalenyl]azo]-, sodium salt; C.I. 26125; Sodium 4-[(4-ethoxyphenyl)azo]-1-naphthylazobenzenesulphonate; 1-Naphthalenesulfonic acid, 4-[(4-ethoxyphenyl)azo]-, diazotized, coupled with aniline; Azo dye intermediate 72765-52-7; 3-[(4-[(4-Ethoxyphenyl)diazenyl]-1-naphthyl)diazenyl]benzenesulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 3-[[4-[(4-Ethoxyphenyl)Azo]-1-Naphthyl]Azo]Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC and spectrophotometric analysis, to ensure high purity and consistent performance as a dye intermediate. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from 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
Sulfated Ash	Contact for details
Solubility (in water)	Freely soluble

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