Description

2,5-Dichloro-4-[4-[(2-Chlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a high-purity, synthetic organic compound primarily utilized as a key intermediate in the production of specialized dyes and pigments. Its complex azo-pyrazolone structure is engineered to impart specific color properties and stability, making it valuable for advanced coloration applications. This chemical is essential for manufacturers in the dye, pigment, and specialty chemical industries seeking consistent quality for their synthesis processes.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a crucial building block in the synthesis of high-performance azo dyes, particularly for applications requiring specific shades and lightfastness.
• Specialty Pigment Manufacturing: Used in the production of complex organic pigments for plastics, coatings, and inks, where color strength and durability are critical.
• Textile Dye Synthesis: An important precursor for dyes used in coloring synthetic and natural fibers.
• Research & Development: Employed in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Functional Material Development: Investigated for potential use in non-linear optical materials and other advanced functional applications due to its conjugated system.

Basic Information

Product Name	2,5-Dichloro-4-[4-[(2-Chlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	93920-40-2
Molecular Formula	C22H15Cl3N4O4S
Molecular Weight	537.80 g/mol
Synonyms	Benzenesulfonic acid, 2,5-dichloro-4-[4-[(2-chlorophenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-; 1-(3,6-Dichloro-4-sulfophenyl)-4-(2-chlorophenyl)azo-3-methyl-5-pyrazolone; Azo pyrazolone intermediate; CI 12715; Pigment Yellow 191:1 intermediate; 2,5-Dichloro-4-{4-[(2-chlorophenyl)diazenyl]-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl}benzenesulfonic acid
EINECS	Contact for details

Quality Control

Our production of 2,5-Dichloro-4-[4-[(2-Chlorophenyl)Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity for industrial synthesis. Every lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) detailing all specifications are provided with each 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, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange powder
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)	Total impurities ≤ 3.0% Any single impurity ≤ 1.0%

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