Description

2-(4-Chlorophenyl)-4-[[4-Chloro-2-(Trifluoromethyl)Phenyl]Azo]-2,4-Dihydro-5-Methyl-3H-Pyrazol-3-One is a specialized high-performance organic pigment and dye intermediate. This compound is valued for its ability to impart excellent color strength, thermal stability, and lightfastness in demanding applications. It is primarily required by manufacturers in the pigments, plastics, coatings, and specialty chemical synthesis industries seeking to produce vivid and durable colors.

Application

• High-Performance Organic Pigments: A key intermediate for manufacturing azo pigments, particularly for applications requiring high color intensity and weather resistance.
• Plastics and Polymer Coloring: Used in the coloration of engineering plastics, synthetic fibers, and masterbatches where thermal stability during processing is critical.
• Industrial Coatings and Inks: Imparts durable color in automotive coatings, industrial paints, and printing inks that demand excellent lightfastness and chemical resistance.
• Specialty Dyes: Serves as a precursor for the synthesis of specialized dyes used in niche applications.
• Research & Development: Utilized in chemical R&D for developing new chromophores and functional materials with specific optical properties.

Basic Information

Item	Details
Product Name	2-(4-Chlorophenyl)-4-[[4-Chloro-2-(Trifluoromethyl)Phenyl]Azo]-2,4-Dihydro-5-Methyl-3H-Pyrazol-3-One
CAS No.	67923-41-5
Molecular Formula	C17H11Cl2F3N4O
Molecular Weight	427.20 g/mol
Synonyms	Pigment Yellow 191; C.I. 12795; 5-Methyl-2-(4-chlorophenyl)-4-[[4-chloro-2-(trifluoromethyl)phenyl]azo]-2,4-dihydro-3H-pyrazol-3-one; 2,4-Dihydro-5-methyl-2-(4-chlorophenyl)-4-[[4-chloro-2-(trifluoromethyl)phenyl]azo]-3H-pyrazol-3-one; YELLOW 191; 2-(4-Chlorophenyl)-4-[(4-chloro-2-(trifluoromethyl)phenyl)azo]-5-methyl-2,4-dihydro-3H-pyrazol-3-one
EINECS	Contact for details

Quality Control

Our production of 2-(4-Chlorophenyl)-4-[[4-Chloro-2-(Trifluoromethyl)Phenyl]Azo]-2,4-Dihydro-5-Methyl-3H-Pyrazol-3-One adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity, spectrophotometry for color value, and tests for heavy metal content, to ensure consistency and performance. Certificates of Analysis (COA) documenting assay, impurity profile, and physical properties 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). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 97.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Specific Impurities (HPLC)	Individual ≤ 0.5%, Total ≤ 1.5%

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