Description

Sodium 4-Chloro-3-[4-[(2,5-Dichlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble azo dye intermediate essential for producing vivid and durable colorants. Its precise molecular structure ensures consistent performance in demanding synthesis processes, making it a critical component for manufacturers requiring reliable and high-quality colorant precursors. This compound is primarily utilized by the specialty chemical and dye industries for creating pigments and dyes used in textiles, inks, and advanced material applications.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance azo dyes, particularly for shades of yellow, orange, and red.
• Textile Dyeing & Printing: Used in the manufacturing of dyes for coloring natural and synthetic fibers, offering good wash and light fastness.
• Ink Formulation: Incorporated into the production of pigments for industrial inks, including those used in packaging and printing.
• Specialty Chemical Synthesis: Acts as a precursor in the synthesis of more complex colorants and functional chemicals for niche applications.
• Research & Development: Employed in R&D laboratories for developing new colorant molecules and studying azo chemistry.

Basic Information

Item	Details
Product Name	Sodium 4-Chloro-3-[4-[(2,5-Dichlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	94158-02-8
Molecular Formula	C22H14Cl3N4NaO4S
Molecular Weight	559.78 g/mol
Synonyms	Benzenesulfonic acid, 4-chloro-3-[4-[(2,5-dichlorophenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-, sodium salt; Sodium 4-chloro-3-(4-((2,5-dichlorophenyl)diazenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonate; Azo dye intermediate 94158-02-8; 1-(4-Chloro-3-sulfophenyl)-3-methyl-4-[(2,5-dichlorophenyl)azo]-5-pyrazolone sodium salt; C.I. Pigment Yellow; PYRAZOLONE ORANGE sodium salt (related derivative)
EINECS	Contact for details

Quality Control

Our Sodium 4-Chloro-3-[4-[(2,5-Dichlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent chemical structure, and batch-to-batch reproducibility. 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). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed when not in use to prevent degradation and moisture absorption.

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
Water Solubility	Freely soluble

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