Description

Sodium 4-[[4-[(4-Ethoxyphenyl)Azo]-2,5-Dimethoxyphenyl]Azo]Benzenesulphonate is a high-purity azo dye intermediate and specialty chemical. This compound is valued for its precise molecular structure, which provides consistent colorant properties and reactivity for downstream synthesis. It is primarily utilized by manufacturers in the dyes and pigments, textile, and specialty chemical industries for producing high-performance colorants and functional materials.

Application

• Primary intermediate for the synthesis of high-value azo dyes and pigments.
• Key component in the production of colorants for textile fibers and fabrics.
• Used in the manufacturing of specialty dyes for inks and coatings.
• Potential precursor for liquid crystal displays (LCDs) and other electronic materials.
• Research and development chemical for novel photochromic or electrochromic materials.
• Starting material for analytical reagents and biological stains.

Basic Information

Product Name	Sodium 4-[[4-[(4-Ethoxyphenyl)Azo]-2,5-Dimethoxyphenyl]Azo]Benzenesulphonate
CAS No.	67875-02-9
Molecular Formula	C22H21N4NaO6S
Molecular Weight	492.48 g/mol
Synonyms	Benzenesulfonic acid, 4-[[4-[(4-ethoxyphenyl)azo]-2,5-dimethoxyphenyl]azo]-, sodium salt; C.I. Solvent Yellow 77; Sodium 4-[(4-[(4-ethoxyphenyl)hydrazinylidene]-2,5-dimethoxyphenyl)hydrazinylidene]benzenesulfonate; 4-[[4-[(4-Ethoxyphenyl)azo]-2,5-dimethoxyphenyl]azo]benzenesulfonic acid sodium salt; Azo dye intermediate 67875-02-9; 2,5-Dimethoxy-4-[(4-sulfophenyl)azo]-4'-ethoxyazobenzene sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 4-[[4-[(4-Ethoxyphenyl)Azo]-2,5-Dimethoxyphenyl]Azo]Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee it meets your technical requirements.

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); ensure the container is kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to red-brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
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.