Description

Disodium p-[4,5-Dihydro-4-[[4-Methoxy-3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate is a high-purity, water-soluble azo dye intermediate characterized by its complex, sulfonated structure. This compound is essential for synthesizing high-performance, wash-fast reactive dyes and pigments, offering superior color strength and stability in demanding applications. It is a critical raw material for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid and durable colors.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton, wool, and nylon dyeing and printing.
• Textile Industry: Imparts excellent wash-fastness, light-fastness, and brilliant shades in textile coloration processes.
• Ink Manufacturing: Used in the production of specialty inks, including inks for digital textile printing, requiring high solubility and color purity.
• Functional Pigments: Serves as a precursor for creating pigments with specific properties for industrial coatings and plastics.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying azo dye chemistry and applications.

Basic Information

Item	Details
Product Name	Disodium p-[4,5-Dihydro-4-[[4-Methoxy-3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate
CAS No.	72121-81-4
Molecular Formula	C25H23N4Na2O13S3
Molecular Weight	744.68 g/mol
Synonyms	Disodium 5-[[4-Methoxy-3-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-3-methyl-4,5-dihydro-1H-pyrazol-1-yl]benzenesulfonate; Reactive Dye Intermediate; Azo Pyrazolone Derivative; C.I. Reactive Orange 107 intermediate; Benzenesulfonic acid, 5-[[4-methoxy-3-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-3-methyl-4,5-dihydro-1H-pyrazol-1-yl]-, disodium salt; Water-soluble azo dye intermediate; Sulfonated azo pyrazolone compound
EINECS	Contact for details

Quality Control

Our production of Disodium p-[4,5-Dihydro-4-[[4-Methoxy-3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonate adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

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 heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to reddish-brown 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
pH (1% Solution)	6.0 - 8.0

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