Description

4-Hydroxy-3-[[2-Methoxy-5-Methyl-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonic Acid is a high-purity, water-soluble azo dye intermediate essential for producing vivid and stable colors. Its complex molecular structure, featuring multiple sulphonic acid groups, provides excellent solubility and binding properties in aqueous systems. This compound is a critical raw material for manufacturers in the textile, ink, and specialty chemical industries seeking to develop advanced colorants with superior performance.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton, wool, and nylon fibers.
• Specialty Ink Formulations: Used in the production of inks for digital textile printing and other applications requiring high color strength and stability.
• Functional Dye Synthesis: Serves as a precursor for dyes used in biological staining, pH indicators, and other analytical applications.
• Research & Development: Employed in chemical R&D for creating novel chromophores and studying azo dye chemistry and properties.

Basic Information

Product Name	4-Hydroxy-3-[[2-Methoxy-5-Methyl-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonic Acid
CAS No.	16452-02-1
Molecular Formula	C20H19N2O11S2
Molecular Weight	527.50 g/mol
Synonyms	Acid Red 337; C.I. 17200; 4-Hydroxy-3-((2-methoxy-5-methyl-4-((2-sulfooxy)ethyl)sulfonyl)phenyl)azo)naphthalene-1-sulfonic acid; 1-Naphthalenesulfonic acid, 4-hydroxy-3-((2-methoxy-5-methyl-4-((2-sulfooxy)ethyl)sulfonyl)phenyl)azo)-; Reactive Red Dye Intermediate; Azo dye intermediate 16452-02-1
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-3-[[2-Methoxy-5-Methyl-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and reliability for your synthesis processes. Certificates of Analysis (COA) detailing batch-specific results are provided to guarantee traceability and compliance with your specifications.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Solubility	Freely soluble in water
Heavy Metals (as Pb)	≤ 20 ppm

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