Description

5-Chloro-3-[(2-Thioxo-4-Oxothiazolidine-5-Yl)Azo]-2-Hydroxybenzenesulfonic Acid is a specialized azo dye intermediate characterized by its unique thiazolidine and sulfonic acid functional groups. This compound is valued for its ability to impart specific color and performance properties in advanced dye synthesis. It is primarily utilized by manufacturers in the textile, leather, and specialty chemical industries seeking to develop high-performance, colorfast pigments and dyes. The CAS number for this product is 32041-50-2.

Application

This advanced chemical intermediate serves critical functions in several high-value industrial processes:

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulose fibers, offering excellent wash and light fastness.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for plastics, inks, and coatings, where thermal stability and color purity are paramount.
• Leather Dyeing Agent: Employed in formulating dyes for leather processing, providing deep, uniform coloration with good adhesion.
• Research & Development: Serves as a valuable synthon in academic and industrial R&D for developing new chromophores and functional materials.
• Textile Printing Inks: A component in the manufacture of inks for digital and screen printing on textiles.

Basic Information

Product Name	5-Chloro-3-[(2-Thioxo-4-Oxothiazolidine-5-Yl)Azo]-2-Hydroxybenzenesulfonic Acid
CAS No.	32041-50-2
Molecular Formula	C9H5ClN3O5S3
Molecular Weight	382.80 g/mol
Synonyms	5-Chloro-2-hydroxy-3-[(5-thioxo-4-oxo-1,3-thiazolidin-2-yl)diazenyl]benzenesulfonic acid; Benzenesulfonic acid, 5-chloro-3-[(2-thioxo-4-oxo-5-thiazolidinyl)azo]-2-hydroxy-; C.I. Reactive Yellow 176 intermediate; Azo dye intermediate based on thiazolidinone; 5-Chloro-2-hydroxy-3-(2-thioxo-4-oxothiazolidin-5-yldiazenyl)benzenesulfonic acid; Thiazolidinone azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of 5-Chloro-3-[(2-Thioxo-4-Oxothiazolidine-5-Yl)Azo]-2-Hydroxybenzenesulfonic Acid adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing purity, impurity profile, and physical data are provided with each shipment and are available upon request.

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. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Solubility	Soluble in alkaline aqueous solutions

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