Description

Sodium 5-Ethoxy-2-[[4-(Phenylazo)Phenyl]Azo]Benzenesulphonate is a synthetic azo compound primarily used as a specialized dye and colorant. This product matters for its ability to provide consistent, vibrant coloration in demanding industrial applications where stability and purity are critical. It is needed by manufacturers in the textile, ink, and specialty chemical industries seeking high-performance pigments and intermediates.

Application

• Primary use as a dye intermediate for the synthesis of complex azo dyes and pigments.
• Coloration agent for specialty inks, including jet printing and security inks.
• Potential use as a colorant for plastics and synthetic polymers requiring specific hue stability.
• Research and development chemical for novel photochromic or electrochromic materials.
• Laboratory reagent for analytical chemistry and chromatography standards.
• Component in the formulation of industrial coatings where specific color properties are required.

Basic Information

Product Name	Sodium 5-Ethoxy-2-[[4-(Phenylazo)Phenyl]Azo]Benzenesulphonate
CAS No.	83221-42-5
Molecular Formula	C20H16N4NaO4S
Molecular Weight	431.42 g/mol
Synonyms	Benzenesulfonic acid, 5-ethoxy-2-[[4-(phenylazo)phenyl]azo]-, sodium salt; CI 26080; Sodium 5-ethoxy-2-[(4-phenylazophenyl)azo]benzenesulfonate; Azo dye intermediate 83221-42-5; 2-[(E)-[4-[(E)-Phenyldiazenyl]phenyl]diazenyl]-5-ethoxybenzenesulfonic acid sodium salt; 5-Ethoxy-2,4'-bis(phenylazo)diphenylamine-4-sulfonic acid sodium salt
EINECS	Contact for details

Quality Control

Our Sodium 5-Ethoxy-2-[[4-(Phenylazo)Phenyl]Azo]Benzenesulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet our high standards. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and compliance for your applications.

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 absorption of atmospheric moisture. Keep away from incompatible materials.

Specification

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

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