Description

4-Acetamido-5-[[2-Methoxy-5-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Anthranilic Acid, Sodium Salt is a specialized, water-soluble anionic azo dye intermediate of significant commercial importance. Its molecular structure, featuring a sulphooxyethylsulphonyl group, imparts excellent solubility and substantivity, making it a critical precursor for high-performance dyes. This compound is primarily sought after by manufacturers in the textile, ink, and specialty chemical industries for synthesizing reactive and acid dyes with enhanced wet-fastness properties.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-quality reactive dyes used in cotton, wool, and nylon dyeing.
• Acid Dye Production: Used in the manufacture of acid dyes for coloring silk, wool, and polyamide fibers.
• Specialty Ink Formulations: Serves as a colorant intermediate in the production of inks for digital textile printing and other specialty applications.
• Research & Development: Utilized in chemical R&D for developing novel chromophores and studying azo dye chemistry.
• Functional Dye Synthesis: Potential precursor for dyes with specific functional properties for non-textile applications.

Basic Information

Item	Details
Product Name	4-Acetamido-5-[[2-Methoxy-5-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Anthranilic Acid, Sodium Salt
CAS No.	85851-60-1
Molecular Formula	C24H21N4O10S2Na
Molecular Weight	620.56 g/mol
Synonyms	Acid Red 337 (sodium salt); C.I. 17200; Sodium 4-acetamido-5-[(2-methoxy-5-[(2-sulphooxyethyl)sulphonyl]phenyl)azo]anthranilate; 5-[(2-Methoxy-5-[(2-sulphooxyethyl)sulphonyl]phenyl)azo]-4-acetamidoanthranilic acid sodium salt; Reactive Red Dye Intermediate; Anthranilic acid azo dye derivative; 4-Acetamidoanthranilic acid azo dye sodium salt
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed using advanced techniques like HPLC to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

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