Description

4-[[3-[(2-Chloroethyl)Sulphonyl]Benzoyl]Amino]-5-Hydroxy-6-[(2-Sulphophenyl)Azo]Naphthalene-1,7-Disulphonic Acid CAS NO 54518-41-1 is a high-purity, polyfunctional azo dye intermediate characterized by its complex aromatic structure containing multiple sulphonic acid groups. This compound is valued for its role as a key precursor in the synthesis of reactive and direct dyes, offering excellent water solubility and strong affinity for cellulosic fibers. It is primarily sought by manufacturers in the textile, leather, and specialty chemical industries for producing vibrant, wash-fast colorants.

Application

• Primary Intermediate for Reactive Dyes: Serves as a critical building block in the manufacture of high-quality reactive dyes for cotton, viscose, and other cellulose-based textiles.
• Direct Dye Synthesis: Used in the production of direct dyes, leveraging its sulphonic acid groups for enhanced solubility and fiber substantivity.
• Leather Coloring Agent: Employed in the formulation of dyes for leather finishing, providing deep, uniform coloration.
• Paper Dye Production: A component in the synthesis of dyes used for coloring paper and paperboard.
• Research & Development: Utilized in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Specialty Ink Formulations: Can be incorporated into the development of specialty inks where specific color properties and stability are required.

Basic Information

Product Name	4-[[3-[(2-Chloroethyl)Sulphonyl]Benzoyl]Amino]-5-Hydroxy-6-[(2-Sulphophenyl)Azo]Naphthalene-1,7-Disulphonic Acid
CAS No.	54518-41-1
Molecular Formula	C25H19ClN4O12S4
Molecular Weight	739.10 g/mol
Synonyms	4-[[3-[(2-Chloroethyl)sulfonyl]benzoyl]amino]-5-hydroxy-6-[(2-sulfophenyl)diazenyl]naphthalene-1,7-disulfonic acid; C.I. Reactive Red 198; Reactive Red 198; Remazol Red 3BS; Levafix Red CA; Dianix Red CC-FS; Sumifix Red 3BF; Drimaren Red CL-5B
EINECS	Contact for details

Quality Control

Our production of 4-[[3-[(2-Chloroethyl)Sulphonyl]Benzoyl]Amino]-5-Hydroxy-6-[(2-Sulphophenyl)Azo]Naphthalene-1,7-Disulphonic Acid adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, precise chemical structure, and compliance with industry specifications for dye intermediates. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics are provided with each shipment.

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 sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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