Description

3-[[4-[(2,5-Dichlorophenyl)Azo]Phenyl]Ethylamino]-1-Propanesulfonic Acid Sodium Salt is a specialized azo dye intermediate and functional chemical compound. This product matters for its role in synthesizing high-performance dyes and pigments, offering excellent color properties and stability. It is primarily needed by manufacturers in the dye and pigment, textile, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary intermediate for the synthesis of acid dyes and reactive dyes.
• Key component in the production of pigments for inks and coatings.
• Used in the coloration of textiles, including nylon, wool, and silk.
• Functional monomer or additive in specialty polymer and material science research.
• Potential use as a staining agent or chromophore in biological and analytical applications.
• Starting material for the development of colorimetric sensors and indicators.

Basic Information

Product Name	3-[[4-[(2,5-Dichlorophenyl)Azo]Phenyl]Ethylamino]-1-Propanesulfonic Acid Sodium Salt
CAS No.	67875-04-1
Molecular Formula	C17H17Cl2N4NaO3S
Molecular Weight	451.31 g/mol
Synonyms	Acid Red 337; C.I. 17200; Sodium 3-[[4-[(2,5-dichlorophenyl)azo]phenyl]ethylamino]propanesulfonate; 3-[N-Ethyl-4-[(2,5-dichlorophenyl)azo]anilino]propanesulfonic acid sodium salt; 2,5-Dichloro-4'-[(ethyl(3-sulfonatopropyl)amino]azobenzene sodium salt; Propanesulfonic acid, 3-[[4-[(2,5-dichlorophenyl)azo]phenyl]ethylamino]-, sodium salt (1:1)
EINECS	Contact for details

Quality Control

Our 3-[[4-[(2,5-Dichlorophenyl)Azo]Phenyl]Ethylamino]-1-Propanesulfonic Acid Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and performance. Certificates of Analysis (COA) detailing specific batch results 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 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	≤ 20 ppm
Water Solubility	Freely soluble

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