Description

4-[4-[[5-(Anilinosulphonyl)-o-Tolyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]-2,5-Dichlorobenzenesulphonic Acid is a high-purity, complex azo dye intermediate with a distinct molecular structure. This compound is valued for its role in synthesizing specialized dyes and pigments, offering precise color properties and chemical stability for demanding applications. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking consistent quality for advanced colorant production.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-performance azo dyes for textiles and fabrics.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for inks, coatings, and plastics.
• Research & Development: Serves as a crucial reagent in chemical R&D for developing new chromophores and functional dyes.
• Analytical Chemistry: Can be utilized as a standard or reagent in specific colorimetric analysis methods.
• Functional Material Synthesis: Potential use in creating dyes for non-textile applications, such as in optical data storage or sensors.

Basic Information

Product Name	4-[4-[[5-(Anilinosulphonyl)-o-Tolyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]-2,5-Dichlorobenzenesulphonic Acid
CAS No.	85721-15-9
Molecular Formula	C29H22Cl2N4O6S2
Molecular Weight	657.54 g/mol
Synonyms	Benzenesulfonic acid, 2,5-dichloro-4-[4,5-dihydro-3-methyl-4-[[5-[(phenylamino)sulfonyl]-2-methylphenyl]azo]-5-oxo-1H-pyrazol-1-yl]-; 2,5-Dichloro-4-[4,5-dihydro-3-methyl-4-[[5-[(phenylamino)sulfonyl]-o-tolyl]azo]-5-oxo-1H-pyrazol-1-yl]benzenesulfonic acid; 4-[4-[[5-(Anilinosulfonyl)-2-methylphenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-2,5-dichlorobenzenesulfonic acid; Azo dye intermediate 85721-15-9; CI 29060 (related class)
EINECS	Contact for details

Quality Control

Our 4-[4-[[5-(Anilinosulphonyl)-o-Tolyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]-2,5-Dichlorobenzenesulphonic Acid is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with each shipment.

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). Keep the container tightly sealed to minimize exposure to atmospheric moisture. Store away from incompatible materials.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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