Description

Disodium 4-Hydroxy-3-[[2-Methoxy-5-Methyl-4-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonate is a high-purity, water-soluble azo dye intermediate essential for producing vibrant and stable colorants. Its molecular structure, featuring multiple sulphonate groups, provides excellent solubility and substantivity, making it a critical component for achieving specific hues and performance characteristics in demanding applications. This compound is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries who require consistent quality and reliable supply for their production processes.

Application

• Textile Dyeing: As a key intermediate for synthesizing reactive and direct dyes for cotton, wool, and nylon fibers.
• Inkjet Inks: Used in the formulation of high-performance inks for digital printing, contributing to color strength and stability.
• Paper Coloring: Employed in the production of dyes for specialty papers and packaging materials.
• Leather Finishing: Serves as an intermediate for dyes used in the leather tanning and finishing industry.
• Biological Staining: Potential use as an intermediate for histological stains and indicators in laboratory settings.
• Functional Dyes: Intermediate for dyes used in optical data storage, liquid crystal displays (LCDs), or other high-tech applications.

Basic Information

Product Name	Disodium 4-Hydroxy-3-[[2-Methoxy-5-Methyl-4-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonate
CAS No.	84000-71-5
Molecular Formula	C21H19N2Na2O12S3
Molecular Weight	656.53 g/mol
Synonyms	Disodium 4-hydroxy-3-[(2-methoxy-5-methyl-4-[(2-sulphooxyethyl)sulphonyl]phenyl)azo]naphthalene-1-sulphonate; C.I. Reactive Red 198; Reactive Red 198; Disodium 1-[4-[[2-(sulphooxy)ethyl]sulphonyl]-2-methoxy-5-methylphenyl]azo]-4-hydroxy-3-naphthalenesulphonate; 84000-71-5; C.I. 182159; Reactive Red M-2BE
EINECS	Contact for details

Quality Control

Our Disodium 4-Hydroxy-3-[[2-Methoxy-5-Methyl-4-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, color strength, and impurity profiles. Certificates of Analysis (COA) documenting key parameters are available upon request 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 (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 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.