Description

Sodium 4-[4-[[3-(Anilinosulphonyl)Phenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]-2,5-Dichlorobenzenesulphonate is a high-purity, synthetic organic chemical compound primarily used as a specialized dye intermediate. Its complex azo-pyrazolone structure provides excellent chromophoric properties, making it a critical component for producing vivid and stable colorants. This product is essential for manufacturers in the textile, ink, and specialty pigment industries seeking consistent quality and reliable performance in their formulations.

Application

• Primary Dye Intermediate: Key precursor in the synthesis of high-performance azo dyes for textiles, leather, and paper.
• Specialty Pigment Manufacturing: Used to create organic pigments with specific color strength and fastness properties for inks and coatings.
• Functional Colorant Production: Serves as a building block for colorants used in plastics, masterbatches, and synthetic fibers.
• Research & Development: Utilized in chemical R&D for developing new chromophores and studying structure-color relationships.
• Analytical Chemistry: Can be employed as a standard or reagent in specific colorimetric analytical methods.

Basic Information

Product Name	Sodium 4-[4-[[3-(Anilinosulphonyl)Phenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]-2,5-Dichlorobenzenesulphonate
CAS No.	15792-51-5
Molecular Formula	C22H16Cl2N5NaO6S2
Molecular Weight	604.41 g/mol
Synonyms	Benzenesulfonic acid, 2,5-dichloro-4-[4-[[3-[(phenylamino)sulfonyl]phenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-, sodium salt; C.I. Acid Yellow 219; Acid Yellow 219; Sodium 2,5-dichloro-4-(4-((3-(phenylsulfamoyl)phenyl)diazenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonate; 1H-Pyrazole-1-benzenesulfonic acid, 4,5-dihydro-4-((3-((phenylamino)sulfonyl)phenyl)azo)-3-methyl-5-oxo-, sodium salt, 2,5-dichloro-; Sodium 4-(4-(3-(N-phenylsulfamoyl)phenylazo)-3-methyl-5-oxo-1-pyrazolin-1-yl)-2,5-dichlorobenzenesulphonate
EINECS	Contact for details

Quality Control

Our Sodium 4-[4-[[3-(Anilinosulphonyl)Phenyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]-2,5-Dichlorobenzenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent color value, and batch-to-batch reproducibility, meeting the stringent requirements of dye and pigment synthesis. Comprehensive Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product performance. 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	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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