Description

2,5-Dichloro-4-[4,5-Dihydro-3-Methyl-5-Oxo-4-[[3-[[(Phenylsulphonyl)Amino]Sulphonyl]Phenyl]Azo]-1H-Pyrazol-1-Yl]Benzenesulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple sulphonic acid groups, makes it a critical precursor for synthesizing specialized reactive and acid dyes. This compound is essential for manufacturers requiring precise colorants with excellent fastness properties for demanding technical applications.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in textile coloring, particularly for cotton and cellulose fibers.
• Precursor for Acid Dyes: Used in the production of acid dyes for coloring nylon, wool, silk, and other polyamide materials.
• Specialty Pigment Manufacturing: Serves as a crucial component in the synthesis of complex organic pigments for inks, coatings, and plastics.
• Research & Development: Used in chemical R&D for developing new chromophores and studying azo dye chemistry and properties.
• Industrial Colorant Production: Integral to the supply chain for manufacturers of industrial colorants requiring specific shades and superior chemical stability.

Basic Information

Product Name	2,5-Dichloro-4-[4,5-Dihydro-3-Methyl-5-Oxo-4-[[3-[[(Phenylsulphonyl)Amino]Sulphonyl]Phenyl]Azo]-1H-Pyrazol-1-Yl]Benzenesulphonic Acid, Sodium Salt
CAS No.	83027-47-8
Molecular Formula	C23H16Cl2N5NaO7S3
Molecular Weight	688.54 g/mol
Synonyms	Sodium 2,5-dichloro-4-[(4,5-dihydro-3-methyl-5-oxo-4-{[3-({[(phenylsulfonyl)amino]sulfonyl})phenyl]diazenyl}-1H-pyrazol-1-yl)benzenesulfonate; 83027-47-8; Benzenesulfonic acid, 2,5-dichloro-4-[4,5-dihydro-3-methyl-5-oxo-4-[[3-[[(phenylsulfonyl)amino]sulfonyl]phenyl]azo]-1H-pyrazol-1-yl]-, sodium salt; Azo dye intermediate 83027-47-8; Reactive dye intermediate.
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is subjected to comprehensive analytical testing, including HPLC for assay and impurity profiling. A detailed Certificate of Analysis (COA) documenting identity, purity, and related substances is provided with each shipment 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 room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brownish powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (1% in Water)	Clear to slightly hazy solution

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