Description

5-(Acetylamino)-4-Hydroxy-3-[[8-[[2-(Sulfooxy)Ethyl]Sulfonyl]-2-Naphthalenyl]Azo]-2,7-Naphthalenedisulfonic Acid is a high-purity, reactive azo dye intermediate essential for synthesizing vibrant and wash-fast colorants. Its complex poly-sulfonated structure provides excellent water solubility and strong substantivity to various substrates, making it a critical building block for advanced dyes. This compound is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking to produce high-performance, environmentally compliant dyes and pigments.

Application

• Primary Intermediate for Reactive Dyes: A key precursor for manufacturing high-quality reactive dyes used in cotton, wool, and nylon fiber dyeing and printing.
• Specialty Ink Production: Used in the synthesis of pigments for inks requiring high color strength and stability, including for textiles and packaging.
• Functional Colorant Synthesis: Serves as a building block for creating complex, sulfonated azo colorants with specific light-fastness and wash-fastness properties.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo dye chemistry and applications.
• Analytical Chemistry: Can be utilized as a standard or reagent in analytical methods for dye identification and quantification.

Basic Information

Product Name	5-(Acetylamino)-4-Hydroxy-3-[[8-[[2-(Sulfooxy)Ethyl]Sulfonyl]-2-Naphthalenyl]Azo]-2,7-Naphthalenedisulfonic Acid
CAS No.	68833-98-7
Molecular Formula	C24H19N3O14S4
Molecular Weight	701.67 g/mol
Synonyms	Acid Red 337 (related dye class); Reactive Dye Intermediate; 2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-((8-((2-(sulfooxy)ethyl)sulfonyl)-2-naphthalenyl)azo)-; 5-Acetamido-4-hydroxy-3-[8-(2-sulfooxyethylsulfonyl)-2-naphthylazo]-2,7-naphthalenedisulfonic acid; Azo dye intermediate CAS 68833-98-7; C.I. Reactive Red 180 related intermediate
EINECS	Contact for details

Quality Control

Our production of 5-(Acetylamino)-4-Hydroxy-3-[[8-[[2-(Sulfooxy)Ethyl]Sulfonyl]-2-Naphthalenyl]Azo]-2,7-Naphthalenedisulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against rigorous in-house specifications, which typically include identity confirmation, assay/purity by HPLC, and control of key impurities. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory needs.

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 absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Solubility (in Water)	Freely soluble

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