Description

3-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-4-Hydroxybenzenesulphonamide CAS NO 5264-47-1 is a specialized azo dye intermediate characterized by its sulfonamide and pyrazolone functional groups. This compound is valued for its role in synthesizing high-performance dyes and pigments, offering excellent color fastness and thermal stability. It is primarily required by manufacturers in the dyestuff, textile, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary intermediate for azo disperse dyes and reactive dyes used in textile coloring.
• Key precursor in the synthesis of high-performance pigments for plastics and coatings.
• Manufacturing of colorants for inks and toners requiring specific spectral properties.
• Research and development of novel optical materials and sensors.
• Production of specialty dyes for leather and paper applications.
• Used in laboratory settings for analytical chemistry and chromatographic studies.

Basic Information

Product Name	3-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-4-Hydroxybenzenesulphonamide
CAS No.	5264-47-1
Molecular Formula	C₁₆H₁₅N₅O₄S
Molecular Weight	373.39 g/mol
Synonyms	4-Hydroxy-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]benzenesulfonamide; Benzenesulfonamide, 4-hydroxy-3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-; C.I. 12715; Disperse Yellow 126; Pyrazolone Azo Sulfonamide; 1-Phenyl-3-methyl-4-(4-sulfamoyl-2-hydroxyphenylazo)-5-pyrazolone; 4-[(1-Phenyl-3-methyl-5-oxo-4-pyrazolin-4-yl)azo]-3-hydroxybenzenesulfonamide
EINECS	226-079-5

Quality Control

Our production of 3-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-4-Hydroxybenzenesulphonamide adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC and NMR. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed and stored under conditions of low humidity to prevent degradation and clumping.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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