Description

6-(Acetylamino)-4-Hydroxy-3-[[4-Methoxy-3-[[2-(Sulfooxy)Ethyl]Sulfonyl]Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple sulfonic acid groups, makes it a key precursor for synthesizing reactive and acid dyes with excellent wash-fastness and brilliant shades. This compound is essential for manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance colorants. We supply this intermediate in consistent quality to support reliable and efficient downstream chemical synthesis.

Application

• Primary Intermediate for Reactive Dyes: Serves as a critical building block in the synthesis of high-quality reactive dyes for cotton, viscose, and other cellulosic fibers.
• Acid Dye Production: Used in the manufacture of acid dyes for coloring wool, silk, and nylon, providing good leveling and colorfastness properties.
• Leather Coloring Agent: Employed in the production of dyes for the leather tanning and finishing industry.
• Specialty Ink Formulation: Acts as a colorant component in the formulation of inks for specialized printing applications.
• Research & Development: Utilized in chemical R&D laboratories for the development of novel chromophores and dye molecules.
• Paper Dyeing: Can be used in the production of dyes for coloring paper products.

Basic Information

Item	Detail
Product Name	6-(Acetylamino)-4-Hydroxy-3-[[4-Methoxy-3-[[2-(Sulfooxy)Ethyl]Sulfonyl]Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt
CAS No.	72429-02-8
Molecular Formula	C21H19N3Na2O12S3
Molecular Weight	663.53 g/mol
Synonyms	Disodium 6-acetamido-4-hydroxy-3-[[4-methoxy-3-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]naphthalene-2-sulfonate; C.I. Reactive Red 141; Reactive Red 141; Reactive Brilliant Red M-8B; Reactive Brilliant Red M8B; 6-Acetamido-4-hydroxy-3-[[4-methoxy-3-[(2-sulfooxyethyl)sulfonyl]phenyl]azo]-2-naphthalenesulfonic acid disodium salt; 72429-02-8
EINECS	Contact for details

Quality Control

Our production of 6-(Acetylamino)-4-Hydroxy-3-[[4-Methoxy-3-[[2-(Sulfooxy)Ethyl]Sulfonyl]Phenyl]Azo]-2-Naphthalenesulfonic Acid Disodium Salt adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) documenting all critical parameters are provided to guarantee traceability and consistency for our B2B customers.

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 stability and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual ≤ 1.0%, Total ≤ 3.0%

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