Description

2,5-Dichloro-4-[5-Amino-1-(4-Chlorophenyl)-3-Methyl-1H-Pyrazole-4-Ylazo]Benzenesulfonic Acid is a high-purity, specialized azo dye intermediate essential for synthesizing vibrant and stable colorants. Its precise molecular structure provides excellent coupling properties and chromophore stability, which are critical for achieving consistent color quality in demanding applications. This compound 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 Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance yellow, orange, and red azo dyes and organic pigments.
• Textile Dye Manufacturing: Used in the production of dyes for coloring natural and synthetic fibers, including cotton, polyester, and nylon.
• Industrial Pigment Production: Essential for creating pigments used in paints, inks, plastics, and coatings that require excellent lightfastness and thermal stability.
• Research & Development: Employed in chemical research for developing novel chromophores, functional dyes, and advanced material science applications.
• Specialty Chemical Synthesis: Acts as a precursor for more complex chemical entities in pharmaceutical and agrochemical research.

Basic Information

Product Name	2,5-Dichloro-4-[5-Amino-1-(4-Chlorophenyl)-3-Methyl-1H-Pyrazole-4-Ylazo]Benzenesulfonic Acid
CAS No.	64485-08-1
Molecular Formula	C16H12Cl3N5O3S
Molecular Weight	476.72 g/mol
Synonyms	Benzenesulfonic acid, 2,5-dichloro-4-[(5-amino-1-(4-chlorophenyl)-3-methyl-1H-pyrazol-4-yl)azo]-; 4-[(5-Amino-1-(4-chlorophenyl)-3-methyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulfonic acid; 1-(4-Chlorophenyl)-3-methyl-4-[(2,5-dichloro-4-sulfophenyl)azo]-5-amino-1H-pyrazole; Azo dye intermediate 64485-08-1; Pyrazole azo dye intermediate; C.I. Azoic Coupling Component (related); Disperse dye intermediate
EINECS	Contact for details

Quality Control

Our production of 2,5-Dichloro-4-[5-Amino-1-(4-Chlorophenyl)-3-Methyl-1H-Pyrazole-4-Ylazo]Benzenesulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every 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, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be opaque or stored in darkness. For long-term storage, consider an inert atmosphere to prevent potential oxidation.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in alkaline aqueous solutions and polar organic solvents

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