Description

7-Acetamido-4-Hydroxy-3-[[2-[[(Phenylsulphonyl)Amino]Sulphonyl]Phenyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt is a high-purity, synthetic azo dye intermediate of significant industrial importance. Its complex molecular structure provides specific chromophoric and functional properties essential for creating vivid and stable colorants. This compound is primarily sought by manufacturers in the dyes and pigments industry for the production of specialized reactive and acid dyes. We supply this chemical with a focus on consistent quality, batch-to-batch reliability, and technical support for global B2B partners.

Application

This specialized azo intermediate serves as a critical building block in several high-value chemical synthesis processes. Its primary and related applications include:

• Primary Intermediate for Reactive Dyes: Key precursor in the synthesis of high-performance reactive dyes used for coloring cotton, wool, and nylon fibers.
• Manufacture of Acid Dyes: Used in the production of acid dyes for applications on silk, wool, leather, and paper, providing good lightfastness and washfastness.
• Specialty Pigment Synthesis: Serves as a starting material for creating complex organic pigments used in inks, coatings, and plastics.
• Research & Development: Utilized in chemical R&D laboratories for developing novel chromophores and studying azo dye chemistry and properties.
• Textile Chemical Production: Integral to the supply chain for companies manufacturing specialized textile dyes and auxiliaries.

Basic Information

Item	Details
Product Name	7-Acetamido-4-Hydroxy-3-[[2-[[(Phenylsulphonyl)Amino]Sulphonyl]Phenyl]Azo]Naphthalene-2-Sulphonic Acid, Sodium Salt
CAS No.	83027-48-9
Molecular Formula	C24H19N4O8S3Na
Molecular Weight	634.61 g/mol
Synonyms	Acid Red 337 (sodium salt); C.I. 17200; Sodium 7-acetamido-4-hydroxy-3-[[2-[(phenylsulfonyl)amino]sulfonyl]phenyl]azo]-2-naphthalenesulfonate; 7-Acetamido-4-hydroxy-2-naphthalenesulfonic acid, 3-[[2-[[(phenylsulfonyl)amino]sulfonyl]phenyl]azo]-, sodium salt; Azo dye intermediate 83027-48-9; Reactive Red dye intermediate; 2-Naphthalenesulfonic acid, 7-(acetylamino)-4-hydroxy-3-((2-(((phenylsulfonyl)amino)sulfonyl)phenyl)azo)-, sodium salt
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management protocols to ensure it meets the exacting standards of the dyes and pigments industry. Every batch is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity, purity, and chromatic properties. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment, ensuring full traceability and compliance with your internal quality systems.

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 performance and handling.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble
λmax (in water)	Contact for details

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