Description

Benzenesulfonic Acid, 4-[[4-[[4-[(2-Cyanoethyl) Ethylamino]Phenyl]Azo]Phenyl]Azo]-, Sodium Salt is a high-purity, synthetic azo dye intermediate and functional chemical. This compound matters for its role in producing vivid, stable colorants and for its utility in advanced material science applications. It is primarily needed by manufacturers in the dyes and pigments, textile, and specialty polymer industries seeking consistent quality for critical synthesis processes.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance, color-fast azo dyes used in textiles, inks, and plastics.
• Textile Dyeing & Printing: Used in formulations for dyeing natural and synthetic fibers, providing excellent wash and light fastness properties.
• Functional Colorant for Polymers: Imparts color to engineering plastics, nylon, and other synthetic polymers during masterbatch production.
• Research & Development: Employed in academic and industrial R&D for developing new chromophores, sensors, and advanced organic materials.
• Specialty Inks: A component in the manufacture of specialty inks for packaging, security printing, and digital applications.
• Liquid Crystal Displays (LCDs): Potential use as a dye dopant in guest-host LCD systems to enhance contrast and color performance.

Basic Information

Product Name	Benzenesulfonic Acid, 4-[[4-[[4-[(2-Cyanoethyl) Ethylamino]Phenyl]Azo]Phenyl]Azo]-, Sodium Salt
CAS No.	67906-53-0
Molecular Formula	C23H21N6NaO3S
Molecular Weight	484.51 g/mol
Synonyms	Sodium 4-[[4-[[4-[(2-cyanoethyl)ethylamino]phenyl]azo]phenyl]azo]benzenesulfonate; C.I. Disperse Red 338; 4-[[4-[[4-[(2-Cyanoethyl)ethylamino]phenyl]azo]phenyl]azo]benzenesulfonic acid sodium salt; Benzenesulfonic acid, 4,4'-[1,4-phenylenebis(azo-2,1-phenylene)]bis[ethyl(2-cyanoethyl)amine], sodium salt; Disperse Red 338; Azo dye intermediate DR-338; Na-DAS-CNE
EINECS	Contact for details

Quality Control

Our Benzenesulfonic Acid, 4-[[4-[[4-[(2-Cyanoethyl) Ethylamino]Phenyl]Azo]Phenyl]Azo]-, Sodium Salt is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure high purity, consistent chromatic performance, and compliance with industry specifications. Certificates of Analysis (COA) detailing purity, identity, 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 absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder or crystalline solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in DMF)	Clear solution

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