Description

Disodium 2,5-Dichloro-4-[4,5-Dihydro-3-Methyl-5-Oxo-4-[(4-Sulphonato-o-Tolyl)Azo]-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble azo pyrazolone dye intermediate. This compound is valued for its role in synthesizing vibrant and stable colorants, particularly for demanding technical applications. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance pigments and dyes.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of reactive dyes for cotton and other cellulose fibers.
• Pigment Manufacturing: Used in the production of high-grade organic pigments for inks, plastics, and coatings.
• Textile Colorants: Essential for creating specific, lightfast yellow to orange shades in textile dyeing and printing processes.
• Specialty Ink Formulation: Employed in the manufacture of inks for digital textile printing and other high-resolution applications.
• Research & Development: Serves as a critical reagent in chemical R&D for developing new colorant molecules and studying azo chemistry.

Basic Information

Item	Details
Product Name	Disodium 2,5-Dichloro-4-[4,5-Dihydro-3-Methyl-5-Oxo-4-[(4-Sulphonato-o-Tolyl)Azo]-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	70815-09-7
Molecular Formula	C23H16Cl2N4Na2O8S2
Molecular Weight	657.40 g/mol
Synonyms	Disodium 2,5-dichloro-4-[(4,5-dihydro-3-methyl-5-oxo-4-[(4-sulphonato-o-tolyl)azo]-1H-pyrazol-1-yl)]benzenesulphonate; C.I. Reactive Yellow 107 intermediate; Azo pyrazolone dye intermediate; 2,5-Dichloro-4-[(4,5-dihydro-3-methyl-5-oxo-4-[(2-methyl-5-sulfophenyl)azo]-1H-pyrazol-1-yl)]benzenesulfonic acid disodium salt; Reactive Yellow 107 precursor; PYRAZOLONE ORANGE intermediate; Lightfast yellow azo intermediate
EINECS	Contact for details

Quality Control

Our Disodium 2,5-Dichloro-4-[4,5-Dihydro-3-Methyl-5-Oxo-4-[(4-Sulphonato-o-Tolyl)Azo]-1H-Pyrazol-1-Yl]Benzenesulphonate is produced under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye and pigment synthesis. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are available upon request to support your quality assurance protocols.

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 strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Yellow to Orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility (in Water)	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm

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