Description

1-(2-Chloro-5-Sulfophenyl)-3-Methyl-4-(2-Methoxyphenyl)Azo-2-Pyrazolin-5-One is a specialized azo pyrazolone derivative valued for its role as a high-performance intermediate in the synthesis of complex dyes and pigments. This compound is engineered to provide excellent chromophoric properties and structural stability for demanding applications. It is primarily utilized by manufacturers in the fine chemicals, textile dye, and advanced materials sectors seeking reliable and consistent raw materials.

Application

• Primary Intermediate for Dyes & Pigments: A key building block in the synthesis of high-value azo dyes, particularly for textile and leather coloring.
• Functional Colorant Synthesis: Used in the production of specialized pigments for inks, coatings, and plastics requiring specific lightfastness and hue.
• Research & Development: Serves as a crucial reagent in chemical R&D for developing novel chromophores and functional materials.
• Fine Chemical Manufacturing: Employed as an intermediate in the multi-step synthesis of complex organic molecules for pharmaceutical and agrochemical applications.
• Analytical Chemistry: Can be used as a standard or reagent in chromatographic analysis and method development for related compounds.

Basic Information

Product Name	1-(2-Chloro-5-Sulfophenyl)-3-Methyl-4-(2-Methoxyphenyl)Azo-2-Pyrazolin-5-One
CAS No.	70796-13-3
Molecular Formula	C17H15ClN4O5S
Molecular Weight	422.84 g/mol
Synonyms	5-Pyrazolone, 1-(2-chloro-5-sulfophenyl)-3-methyl-4-[(2-methoxyphenyl)azo]-; 4-[(2-Methoxyphenyl)azo]-1-(2-chloro-5-sulfophenyl)-3-methyl-5-pyrazolone; Azo Pyrazolone Derivative CAS 70796-13-3; 1-(2-Chloro-5-sulfophenyl)-3-methyl-4-(2-methoxyphenylazo)-5-pyrazolone; C.I. Azoic Coupling Component; Disperse Dye Intermediate; Acid Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of 1-(2-Chloro-5-Sulfophenyl)-3-Methyl-4-(2-Methoxyphenyl)Azo-2-Pyrazolin-5-One adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent lot-to-lot performance. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

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%
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.