Description

4-Chloro-3-[4-[(3-Formylphenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a high-purity, specialized azo dye intermediate with a complex molecular structure designed for advanced synthesis. Its core value lies in its role as a precise chemical building block, enabling the production of high-performance dyes and pigments with specific color and fastness properties. This compound is essential for manufacturers in the fine chemicals, specialty dyes, and advanced materials sectors seeking reliable intermediates for research and industrial-scale production.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key precursor in the synthesis of high-value, complex azo dyes, particularly for applications requiring specific shades and enhanced light or wash fastness.
• Specialty Textile Dye Manufacturing: Used in the production of dyes for synthetic fibers like polyester and nylon, where chemical stability and color intensity are critical.
• Functional Dyes for Non-Textile Applications: Employed in the development of dyes for inks, coatings, plastics, and other industrial materials where the formyl and sulphonic acid groups offer advantageous properties.
• Research & Development in Color Chemistry: A valuable compound for academic and industrial R&D labs exploring new chromophores, dye structures, and their photophysical properties.
• Chemical Synthesis Building Block: The reactive sites (chloro, formyl, azo) make it a versatile intermediate for further functionalization in organic synthesis projects.

Basic Information

Product Name	4-Chloro-3-[4-[(3-Formylphenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	93778-49-5
Molecular Formula	C17H13ClN4O5S
Molecular Weight	420.82 g/mol
Synonyms	4-Chloro-3-[4-[(3-formylphenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonic acid; Benzenesulfonic acid, 4-chloro-3-[4-[(3-formylphenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-; 93778-49-5; Azo dye intermediate CAS 93778-49-5; 1H-Pyrazole-1-benzenesulfonic acid derivative
EINECS	Contact for details

Quality Control

Our 4-Chloro-3-[4-[(3-Formylphenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance as a dye intermediate. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and identity confirmation. Our quality commitment ensures the material meets the exacting standards required for advanced chemical synthesis.

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 to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Yellow to orange powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility	Soluble in polar organic solvents; sparingly soluble in water

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