Description

Disodium hydrogen 4,5-dihydro-4-[[4-[[[2-methoxy-5-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]amino]carbonyl]phenyl]azo]-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate is a high-purity, water-soluble anionic dye intermediate characterized by its complex polyfunctional structure. This compound is engineered to deliver exceptional color strength and stability in demanding industrial formulations. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries seeking advanced chromophores for high-performance applications.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-grade reactive dyes for cotton, wool, and nylon.
• Textile Colorants: Used in the production of dyes offering excellent wash-fastness and light-fastness properties.
• Inkjet Inks: Serves as a critical component in the formulation of professional and industrial pigment inks.
• Specialty Coatings: Employed in the manufacture of colored coatings where durability and chemical resistance are paramount.
• Functional Dyes: Potential use in the development of dyes for non-textile applications, such as in optical or electronic materials.
• Research & Development: Used in chemical R&D for creating novel dye structures and studying azo dye chemistry.

Basic Information

Product Name	Disodium hydrogen 4,5-dihydro-4-[[4-[[[2-methoxy-5-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]amino]carbonyl]phenyl]azo]-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
CAS No.	84145-46-0
Molecular Formula	C27H21N5O15S3Na2
Molecular Weight	829.63 g/mol
Synonyms	Reactive Dye Intermediate 84145-46-0; Disodium 4,5-dihydro-5-ox-1-(4-sulfophenyl)-4-[[4-[[[2-methoxy-5-[(2-sulfooxyethyl)sulfonyl]phenyl]amino]carbonyl]phenyl]azo]-1H-pyrazole-3-carboxylate; Azo pyrazole carboxylic acid derivative; CI Reactive Red 245 intermediate; Tetrasulfonated azo dye precursor; Water-soluble anionic dye intermediate; 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-4-[[4-[[[2-methoxy-5-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]carbonyl]phenyl]azo]-5-oxo-1-(4-sulfophenyl)-, disodium salt
EINECS	Contact for details

Quality Control

Our production of disodium hydrogen 4,5-dihydro-4-[[4-[[[2-methoxy-5-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]amino]carbonyl]phenyl]azo]-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate adheres to a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent performance in downstream synthesis. 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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content (KF)	Max. 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	Max. 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.