Description

3-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-4-Hydroxy-5-Nitrobenzenesulphonic Acid is a specialized azo dye intermediate and a key building block for synthesizing high-performance colorants. Its value lies in its precise molecular structure, which imparts specific color properties and stability to the final dye or pigment. This compound is essential for manufacturers in the dyestuff, textile, and specialty chemical industries seeking to develop vibrant and durable colors.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a crucial precursor in the synthesis of complex azo dyes, particularly for shades of yellow, orange, and red.
• Textile Dye Manufacturing: Used in the production of dyes for coloring natural and synthetic fibers, including cotton, wool, and nylon.
• Specialty Colorant Production: Employed in creating high-value colorants for inks, coatings, and plastics where specific lightfastness and chemical resistance are required.
• Research & Development: A valuable compound for chemical R&D in organic synthesis and material science for developing novel chromophores.
• Fine Chemical Synthesis: Acts as a building block for more complex sulfonated aromatic compounds used in various industrial processes.

Basic Information

Product Name	3-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-4-Hydroxy-5-Nitrobenzenesulphonic Acid
CAS No.	24041-30-3
Molecular Formula	C₁₆H₁₃N₅O₇S
Molecular Weight	419.37 g/mol
Synonyms	4-Hydroxy-3-[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)azo]-5-nitrobenzenesulfonic acid; Benzenesulfonic acid, 4-hydroxy-3-[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)azo]-5-nitro-; 3-[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-4-hydroxy-5-nitrobenzenesulfonic acid; Azo dye intermediate 24041-30-3; 1-Phenyl-3-methyl-4-(2-hydroxy-3-nitro-5-sulfophenylazo)-5-pyrazolone; Acid Yellow dye intermediate
EINECS	Contact for details

Quality Control

Our 3-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-4-Hydroxy-5-Nitrobenzenesulphonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance as a dye intermediate. 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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