Description

7-Acetamido-4-Hydroxy-3-[[6-Sulpho-8-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2-Sulphonic Acid is a high-purity, polyfunctional azo dye intermediate characterized by its multiple sulphonic acid and sulphonyl groups. This compound matters for its role as a key precursor in the synthesis of advanced, water-soluble reactive and acid dyes, offering excellent color fastness and binding properties. It is primarily needed by manufacturers in the textile, leather, and specialty chemical industries seeking to produce vibrant and durable colorants.

Application

• Primary intermediate for the synthesis of reactive dyes used in cotton and cellulose fiber dyeing.
• Key building block in the production of high-performance acid dyes for wool, silk, and nylon.
• Used in the formulation of leather dyes requiring good penetration and color uniformity.
• Intermediate for creating specialized pigments and colorants for inks and coatings.
• Potential use in the research and development of functional dyes for non-textile applications, such as sensors or optical materials.
• Serves as a standard or reference compound in analytical chemistry and quality control laboratories for dye analysis.

Basic Information

Product Name	7-Acetamido-4-Hydroxy-3-[[6-Sulpho-8-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2-Sulphonic Acid
CAS No.	68833-99-8
Molecular Formula	C24H21N3O14S3
Molecular Weight	687.63 g/mol
Synonyms	Acid Red 337; C.I. 17200; 7-Acetamido-4-hydroxy-2-naphthalenesulfonic acid-3-azo-6-sulfo-8-[(2-sulfooxyethyl)sulfonyl]-2-naphthalene; Reactive Red 180 intermediate; Azo dye intermediate CAS 68833-99-8; 2-Naphthalenesulfonic acid, 7-acetamido-4-hydroxy-3-[[6-sulfo-8-[[2-(sulfooxy)ethyl]sulfonyl]-2-naphthalenyl]azo]-
EINECS	Contact for details

Quality Control

Our 7-Acetamido-4-Hydroxy-3-[[6-Sulpho-8-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2-Sulphonic Acid is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance as a dye intermediate. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are 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 sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF Titration)	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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