Description

5-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]-2,4-Dimethoxybenzenesulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. It is valued for its ability to impart bright, stable colors and its reactive functional groups that enable strong covalent bonding to substrates. This compound is essential for manufacturers requiring consistent and reliable performance in advanced coloring applications. Its primary utility is found in the production of specialized dyes and pigments for demanding industrial sectors.

Application

• Reactive Dye Synthesis: A key intermediate for manufacturing high-performance reactive dyes used in textile dyeing and printing, particularly for cotton and cellulose fibers.
• Specialty Pigment Production: Used in the creation of pigments for inks, coatings, and plastics where color fastness and chemical stability are critical.
• Biological Staining: Potential application in the formulation of histological stains and indicators for laboratory and diagnostic use.
• Functional Material Research: Serves as a building block in research for developing advanced materials, such as colorimetric sensors or light-harvesting complexes.
• Paper Coloring: Employed in the production of dyes for high-quality paper and specialty packaging materials.
• Leather Finishing: Used in dye formulations for leather goods requiring vibrant and durable coloration.

Basic Information

Product Name	5-[[4,5-Dihydro-3-Methyl-5-Oxo-1-[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]-1H-Pyrazol-4-Yl]Azo]-2,4-Dimethoxybenzenesulphonic Acid, Sodium Salt
CAS No.	85567-13-1
Molecular Formula	C20H20N4NaO12S3
Molecular Weight	651.57 g/mol
Synonyms	Benzenesulfonic acid, 5-[(4,5-dihydro-3-methyl-5-oxo-1-[4-[(2-sulfooxyethyl)sulfonyl]phenyl]-1H-pyrazol-4-yl)azo]-2,4-dimethoxy-, sodium salt (1:1); Reactive Dye Intermediate 85567-13-1; Sodium 5-[(4,5-dihydro-3-methyl-5-oxo-1-(4-((2-sulfonatooxyethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)azo]-2,4-dimethoxybenzenesulfonate; 1H-Pyrazole-4-sulfonic acid, 4-[(2,4-dimethoxy-5-sulfophenyl)azo]-4,5-dihydro-3-methyl-5-oxo-1-[4-[(2-sulfooxyethyl)sulfonyl]phenyl]-, sodium salt
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is subjected to comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet exacting customer specifications. A Certificate of Analysis (COA) detailing identity, purity, and related substances is provided with every shipment. We support compliance with global regulatory frameworks, including REACH.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Solubility (in Water)	Freely soluble
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.