Description

4-[(4-Chloro-2-Nitrophenyl)Azo]-2,4-Dihydro-5-Methyl-3H-Pyrazol-3-One CAS NO 14730-30-4 is a high-purity azo pyrazolone derivative, a critical specialty chemical valued for its precise chromophoric properties and consistent performance. This compound is engineered to deliver reliable colorant and intermediate functionality in demanding industrial synthesis processes. It is primarily required by manufacturers in the dye and pigment industries, as well as by research institutions developing advanced functional materials.

Application

• Primary intermediate for the synthesis of high-performance azo dyes and pigments, particularly for textiles and plastics.
• Key chromophore component in the production of disperse dyes for synthetic fibers like polyester.
• Used in the manufacture of organic pigments for inks, coatings, and specialty paints.
• Acts as a chemical building block in pharmaceutical research for developing novel active compounds.
• Potential use as a research chemical in material science for light-absorbing or charge-transfer applications.
• Specialized applications in the formulation of colorants for specialty polymers and engineering resins.

Basic Information

Product Name	4-[(4-Chloro-2-Nitrophenyl)Azo]-2,4-Dihydro-5-Methyl-3H-Pyrazol-3-One
CAS No.	14730-30-4
Molecular Formula	C10H8ClN5O3
Molecular Weight	281.66 g/mol
Synonyms	5-Methyl-2-[(4-chloro-2-nitrophenyl)azo]-2,4-dihydro-3H-pyrazol-3-one; 4-[(4-Chloro-2-nitrophenyl)azo]-5-methyl-2-pyrazolin-3-one; C.I. Disperse Yellow 42; Disperse Yellow 42; 1-(4-Chloro-2-nitrophenyl)azo-3-methyl-5-pyrazolone; 3-Methyl-1-(4-chloro-2-nitrophenyl)azo-5-pyrazolone; Azo Pyrazolone Derivative (14730-30-4)
EINECS	Contact for details

Quality Control

Our production of 4-[(4-Chloro-2-Nitrophenyl)Azo]-2,4-Dihydro-5-Methyl-3H-Pyrazol-3-One adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is subjected to comprehensive analytical testing, including HPLC and spectroscopic methods, to verify identity and meet specified impurity profiles. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials and sources of ignition. Due to its light-sensitive nature, containers should be opaque or stored in darkness to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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