Description

Sodium 2,5-Dichloro-4-[4-[[5-[(Ethylphenylamino)Sulphonyl]-o-Tolyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing specialized dyes and pigments, offering excellent color properties and structural stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of reactive dyes for cotton and other cellulosic fibers.
• Specialty Pigment Manufacturing: Used in the production of high-grade organic pigments for inks, coatings, and plastics.
• Textile Colorant Synthesis: Essential for creating specific, vibrant shades with good wash and light fastness in textile applications.
• Functional Dye Production: Serves as a precursor for dyes used in specialized applications, including paper coloring and leather dyeing.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo dye chemistry.

Basic Information

Product Name	Sodium 2,5-Dichloro-4-[4-[[5-[(Ethylphenylamino)Sulphonyl]-o-Tolyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	85455-43-2
Molecular Formula	C31H26Cl2N5NaO6S2
Molecular Weight	722.59 g/mol
Synonyms	Benzenesulfonic acid, 2,5-dichloro-4-[4-[[5-[(ethylphenylamino)sulfonyl]-2-methylphenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]-, sodium salt; Sodium 2,5-dichloro-4-(4-((5-((N-ethylphenyl)sulfamoyl)-2-methylphenyl)diazenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonate; Azo dye intermediate 85455-43-2; Reactive dye intermediate; C.I. Reactive Orange 84 intermediate (related).
EINECS	Contact for details

Quality Control

Our Sodium 2,5-Dichloro-4-[4-[[5-[(Ethylphenylamino)Sulphonyl]-o-Tolyl]Azo]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance. Comprehensive Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are provided to guarantee compliance with your specifications and industry standards.

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). Keep away from incompatible materials and sources of heat. The product is light-sensitive and should be stored away from light to maintain stability.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear solution

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