Description

Benzenesulfonic Acid, 5-Chloro-2-1-(2-Chlorophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Ylazo-4-Methyl-, Sodium Salt is a high-purity, water-soluble azo dye intermediate and specialty chemical. This compound is valued for its precise chemical structure, which provides excellent chromophoric properties and reactivity for synthesizing complex colorants. It is primarily needed by manufacturers in the dye and pigment industry, as well as researchers in fine chemical synthesis and material science.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance, complex azo dyes for textiles, inks, and plastics.
• Specialty Colorant Production: Used in the manufacture of specialized dyes requiring specific shades, lightfastness, and thermal stability.
• Fine Chemical Synthesis: Acts as a reactive intermediate in organic synthesis for pharmaceuticals and advanced materials research.
• Research & Development: Utilized in academic and industrial R&D labs for developing new chromophores and functional molecules.
• Industrial Coatings: Potential use in formulating specialized industrial coatings where specific color properties are required.

Basic Information

Product Name	Benzenesulfonic Acid, 5-Chloro-2-1-(2-Chlorophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Ylazo-4-Methyl-, Sodium Salt
CAS No.	163879-73-0
Molecular Formula	C17H13Cl2N4NaO4S
Molecular Weight	467.27 g/mol
Synonyms	Sodium 5-chloro-2-[1-(2-chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo-4-methylbenzenesulfonate; 5-Chloro-2-[1-(2-chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo-4-methylbenzenesulfonic Acid Sodium Salt; Azo Dye Intermediate (CAS 163879-73-0); Benzenesulfonic acid, 5-chloro-2-[1-(2-chlorophenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo-4-methyl-, sodium salt (1:1)
EINECS	Contact for details

Quality Control

Our Benzenesulfonic Acid, 5-Chloro-2-1-(2-Chlorophenyl)-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-4-Ylazo-4-Methyl-, Sodium Salt is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC and spectroscopic methods, to ensure high purity and batch-to-batch consistency suitable for industrial synthesis. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. The container should be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to red-brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	≤ 1.0%

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