Description

3H-Pyrazol-3-One,4,4'-[[(4-Methoxyphenyl)Methylene]Bis[(2-Methyl-4,1-Phenylene)Azo]]Bis is a specialized azo dye intermediate characterized by its complex molecular structure, which imparts specific color and stability properties. This compound matters for its role in synthesizing high-performance pigments and dyes with excellent lightfastness and thermal stability. Industrial manufacturers in the pigments, advanced coatings, and specialty polymers sectors require this chemical to develop products with vibrant, durable colors.

Application

• High-Performance Organic Pigments: A key intermediate for manufacturing azo pigments used in automotive paints, industrial coatings, and plastics.
• Specialty Dyes for Polymers: Used in the coloration of engineering plastics, synthetic fibers, and masterbatches requiring high-temperature processing stability.
• Ink Formulations: Employed in the production of specialty printing inks, including those for security printing and packaging, where color consistency is critical.
• Advanced Material Research: Serves as a building block in the development of novel chromophores for optical materials and sensor applications.
• Textile Dyeing: Potential use in the synthesis of dyes for synthetic fabrics requiring specific shade and fastness properties.

Basic Information

Product Name	3H-Pyrazol-3-One,4,4'-[[(4-Methoxyphenyl)Methylene]Bis[(2-Methyl-4,1-Phenylene)Azo]]Bis
CAS No.	72906-47-9
Molecular Formula	C31H26N8O3
Molecular Weight	558.59 g/mol
Synonyms	4,4'-[[(4-Methoxyphenyl)methylene]bis[(2-methyl-4,1-phenylene)azo]]bis(3H-pyrazol-3-one); Bisazo Pyrazolone Derivative; Azo Dye Intermediate 72906-47-9; Pigment Yellow 191 (related derivative); CI 12915 (related index); 3H-Pyrazol-3-one, 4,4'-[((4-methoxyphenyl)methylene)bis(2-methyl-4,1-phenylene)azo]bis-; 4,4'-[(4-Methoxybenzylidene)bis(2-methyl-4,1-phenylene)azo]dipyrazolone
EINECS	Contact for details

Quality Control

Our production of this azo intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques to verify identity and composition. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every shipment 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 strong oxidizing agents. The compound may be light-sensitive; prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Orange to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 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.