Description

Disodium 4-[4-[[3-[benzyl[3-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzoyl]amino]-p-tolyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex molecular structure provides excellent chromophoric properties, making it a critical precursor for synthesizing high-value, specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant and stable colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in cotton and cellulose fiber dyeing.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and high-quality industrial coatings.
• Textile Colorant Synthesis: Serves as a crucial component in creating specific shades of reds, oranges, and related hues with good light and wash fastness.
• Functional Dye Production: Potential precursor for dyes used in non-textile applications such as lasers, sensors, or imaging technologies.
• Research & Development: Used in chemical R&D for developing novel chromophores and studying azo dye chemistry and properties.

Basic Information

Item	Details
Product Name	Disodium 4-[4-[[3-[benzyl[3-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzoyl]amino]-p-tolyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate
CAS No.	93783-19-8
Molecular Formula	C41H30N8Na2O10S2
Molecular Weight	888.81 g/mol
Synonyms	Reactive Red 198 (Parent Dye related intermediate); Disodium 1,3-Benzenedicarboxamide, N,N'-bis-substituted azo derivative; CI 182155 (Related); Azo pyrazolone dye intermediate; Water-soluble disazo dye salt; Benzene sulfonic acid derivative; Dye intermediate for red hues; Technical grade dye precursor.
EINECS	Contact for details

Quality Control

Our disodium azo dye intermediate is produced under a strict quality management system to ensure batch-to-batch consistency and reliability for industrial synthesis. Quality is verified through comprehensive analytical testing, including HPLC for purity and assay, identification by spectroscopic methods, and control of key impurities. A Certificate of Analysis (COA) detailing all specifications and test results is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, 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%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 4.0%

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