Description

3-[5-Amino-4-[[2-[(2-Chlorophenoxy)Sulfonyl]Phenyl]Azo]-3-Methyl-1H-Pyrazol-1-Yl]-4-Chlorobenzenesulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its precise molecular structure is engineered for consistent performance in demanding synthesis processes, offering reliable reactivity and colorant properties. This compound is essential for manufacturers in the dyestuff, pigment, and specialty chemical industries seeking to produce high-value, complex colorants.

Application

• Primary Intermediate for the synthesis of high-performance azo dyes and pigments.
• Key component in the production of reactive dyes for textile applications, particularly for cotton and cellulose fibers.
• Used in manufacturing acid dyes for wool, silk, and nylon.
• Building block for specialty pigments used in inks, coatings, and plastics.
• Intermediate in research and development of novel functional dyes for non-textile applications.
• Potential use in the synthesis of biological stains and diagnostic reagents.

Basic Information

Product Name	3-[5-Amino-4-[[2-[(2-Chlorophenoxy)Sulfonyl]Phenyl]Azo]-3-Methyl-1H-Pyrazol-1-Yl]-4-Chlorobenzenesulfonic Acid Sodium Salt
CAS No.	71617-71-5
Molecular Formula	C22H16Cl2N5O6S2Na
Molecular Weight	604.41 g/mol
Synonyms	Sodium 3-[5-Amino-4-[[2-[(2-chlorophenoxy)sulfonyl]phenyl]azo]-3-methyl-1H-pyrazol-1-yl]-4-chlorobenzenesulfonate; 4-Chloro-3-[5-amino-4-[[2-[(2-chlorophenoxy)sulfonyl]phenyl]azo]-3-methyl-1H-pyrazol-1-yl]benzenesulfonic Acid Sodium Salt; Azo Dye Intermediate 71617-71-5; Benzenesulfonic acid, 4-chloro-3-[5-amino-4-[[2-[(2-chlorophenoxy)sulfonyl]phenyl]azo]-3-methyl-1H-pyrazol-1-yl]-, sodium salt; CI 28010 (related class)
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. Certificates of Analysis (COA) detailing assay, impurity profile, and physical characteristics are provided with every shipment. We support compliance with global regulatory frameworks, including REACH.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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