Description

4-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]-m-Xylene-5-Sulphonic Acid, Sodium Salt is a high-purity, water-soluble reactive dye intermediate of significant commercial importance. This compound is engineered for the synthesis of advanced, wash-fast, and light-stable dyes, primarily for the textile industry. It is an essential raw material for manufacturers of reactive dyes targeting cotton, wool, and nylon fibers, where consistent quality and reliable supply are critical for production.

Application

• Primary Intermediate for Reactive Dyes: Serves as a key building block in the synthesis of high-performance reactive dyes for cellulose fibers like cotton, viscose, and linen.
• Textile Dyeing and Printing: Used in the production of dyes for exhaust, pad-batch, and continuous dyeing processes, as well as for textile printing applications.
• Specialty Colorants: Employed in the manufacture of dyes for leather, paper, and other specialty applications requiring strong color fixation.
• Research & Development: Utilized in chemical R&D laboratories for developing novel dye structures with enhanced properties such as improved brightness or environmental profile.
• Industrial Ink Formulation: Can be a component in the synthesis of pigments or dyes for certain types of industrial inks.

Basic Information

Product Name	4-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]-m-Xylene-5-Sulphonic Acid, Sodium Salt
CAS No.	93904-43-9
Molecular Formula	C20H19N4NaO10S3
Molecular Weight	610.56 g/mol
Synonyms	Reactive Dye Intermediate 93904-43-9; Sodium 4-((4,5-dihydro-3-methyl-5-oxo-1-(4-((2-sulfooxy)ethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)azo)-m-xylene-5-sulfonate; 1H-Pyrazole-5-sulfonic acid, 4,5-dihydro-4-((2,4-dimethyl-5-sulfophenyl)azo)-3-methyl-5-oxo-1-(4-((2-sulfooxy)ethyl)sulfonyl)phenyl)-, sodium salt; C.I. Reactive Orange 107 intermediate; Azo pyrazole sulfonate dye intermediate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity, which is vital for predictable dye synthesis outcomes. Each lot is analyzed using advanced techniques like HPLC to confirm identity and purity. Certificates of Analysis (COA) detailing key specifications are provided with every 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
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.