Description

Sodium 4-[[1-[4-[[[[4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)phenyl]amino]carbonyl]amino]phenyl]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-3-hydroxy-7-nitronaphthalene-1-sulphonate is a high-purity, complex azo dye intermediate essential for producing vibrant and stable colorants. This compound is valued for its precise molecular structure, which imparts excellent color fastness and performance in demanding applications. It is a critical raw material for manufacturers in the textile, ink, and specialty coatings industries seeking reliable and consistent color quality.

Application

• Textile Dyeing: A key intermediate for synthesizing high-performance reactive and direct dyes for cotton, wool, and synthetic fibers.
• Ink Manufacturing: Used in the production of pigments for industrial inks, including packaging and security inks requiring specific spectral properties.
• Specialty Coatings: Serves as a colorant precursor in coatings for plastics,纸张, and other substrates where color stability is paramount.
• Research & Development: Employed in chemical research for developing novel chromophores and studying azo dye chemistry and photostability.
• Analytical Reagents: Can be utilized as a standard or reagent in analytical chemistry for colorimetric detection methods.

Basic Information

Product Name	Sodium 4-[[1-[4-[[[[4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)phenyl]amino]carbonyl]amino]phenyl]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-3-hydroxy-7-nitronaphthalene-1-sulphonate
CAS No.	68258-99-1
Molecular Formula	C31H23N9NaO9S
Molecular Weight	720.63 g/mol
Synonyms	Reactive Red 198 (sodium salt); C.I. Reactive Red 198; Sodium 1-[4-[[4-[[4-[(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)phenyl]carbamoylamino]phenyl]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]azo]-6-hydroxy-3-nitronaphthalene-2-sulphonate; 68258-99-1; Reactive Red 198; C.I. 18215; Benzenesulfonic acid, 4-[[1-[4-[[[[4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)phenyl]amino]carbonyl]amino]phenyl]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-3-hydroxy-7-nitro-, sodium salt
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to rigorous quality control protocols to ensure batch-to-batch consistency and high purity. Standard testing includes identification, assay, and impurity profile analysis via advanced chromatographic methods. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance and regulatory compliance needs.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture 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.