Description

5-Ethoxy-4-Hydroxy-3-[[4-(6-Methylbenzothiazol-2-Yl)Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a key precursor for synthesizing specialized dyes and pigments with excellent color fastness and stability. This compound is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial building block in the synthesis of high-performance azo dyes for textiles and fibers.
• Specialty Ink Formulation: Used in the production of colorants for industrial inks, including those for packaging and security printing.
• Functional Pigment Synthesis: A key starting material for creating pigments used in automotive and industrial coatings requiring light and weather resistance.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Reagents: Can be utilized as a colorimetric reagent or indicator in specific analytical chemistry applications.

Basic Information

Item	Details
Product Name	5-Ethoxy-4-Hydroxy-3-[[4-(6-Methylbenzothiazol-2-Yl)Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	83400-09-3
Molecular Formula	C32H23N4Na2O8S3
Molecular Weight	748.70 g/mol
Synonyms	Acid Red 337; C.I. 17210; Sodium 5-ethoxy-4-hydroxy-3-((4-(6-methyl-2-benzothiazolyl)phenyl)azo)-2,7-naphthalenedisulfonate; 2,7-Naphthalenedisulfonic acid, 5-ethoxy-4-hydroxy-3-((4-(6-methyl-2-benzothiazolyl)phenyl)azo)-, disodium salt; Azo dye intermediate 83400-09-3; 3-((4-(6-Methyl-2-benzothiazolyl)phenyl)azo)-5-ethoxy-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our production of 5-Ethoxy-4-Hydroxy-3-[[4-(6-Methylbenzothiazol-2-Yl)Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity. Certificates of Analysis (COA) documenting key specifications are available upon request to support your quality assurance processes.

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	Dark red to 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.