Description

Sodium 2-[[3-[(8-Acetamido-2-Hydroxy-1-Naphthyl)Azo]-4-Hydroxyphenyl]Sulphonyl]Ethyl Sulphate is a high-purity, water-soluble anionic azo dye intermediate, essential for producing vivid and stable colorants. Its value lies in its precise molecular structure, which enables the synthesis of specialized dyes with excellent fastness properties for demanding applications. This compound is primarily needed by manufacturers in the textile, ink, and specialty chemical industries seeking reliable intermediates for high-performance dye and pigment production.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-quality reactive dyes for cotton and cellulose fiber dyeing and printing.
• Specialty Ink Formulations: Used in the production of pigments for inks requiring specific color shades and stability, including some textile printing inks.
• Functional Dye Synthesis: Serves as a precursor for dyes used in non-textile applications, such as paper coloration or specialty coatings.
• Research & Development: Utilized in chemical R&D labs for developing novel chromophores and studying azo dye chemistry and properties.

Basic Information

Product Name	Sodium 2-[[3-[(8-Acetamido-2-Hydroxy-1-Naphthyl)Azo]-4-Hydroxyphenyl]Sulphonyl]Ethyl Sulphate
CAS No.	93904-45-1
Molecular Formula	C20H17N3NaO9S2
Molecular Weight	538.48 g/mol
Synonyms	2-[[3-[(8-Acetamido-2-hydroxy-1-naphthyl)azo]-4-hydroxyphenyl]sulphonyl]ethyl sulphate sodium salt; C.I. Reactive Red 238; Reactive Red 238; Sodium 1-[2-(sulfooxy)ethylsulfonyl]-2-[3-(2-hydroxy-8-acetamido-1-naphthylazo)-4-hydroxyphenyl]diazenylbenzene; Acetic acid, 2-hydroxy-8-[[4-hydroxy-3-[[2-(sulfoxy)ethyl]sulfonyl]phenyl]azo]-1-naphthalenyl-, sodium salt; Azo dye intermediate 93904-45-1
EINECS	Contact for details

Quality Control

Our Sodium 2-[[3-[(8-Acetamido-2-Hydroxy-1-Naphthyl)Azo]-4-Hydroxyphenyl]Sulphonyl]Ethyl Sulphate is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with agreed specifications. Certificates of Analysis (COA) documenting all critical quality parameters are provided and available upon request.

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 tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Solubility (1% 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.