Description

6-Hydroxy-n-(2-Hydroxyethyl)-n-Methyl-5-[[4-(Phenylazo)Phenyl]Azo]Naphthalene-2-Sulphonamide is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its value lies in its precise molecular structure, which is engineered to impart specific color properties and performance characteristics in final formulations. This compound is essential for manufacturers in the textile, ink, and specialty polymer industries seeking reliable and consistent colorant precursors.

Application

This specialized azo compound serves as a critical building block in the production of high-performance colorants. Its primary and related applications include:

• Textile Dye Synthesis: A key intermediate for manufacturing reactive and direct dyes for cotton, nylon, and other fibers.
• Inkjet and Printing Inks: Used in the formulation of pigments and dyes for high-quality digital and industrial printing applications.
• Plastic and Polymer Coloring: Imparts color to engineering plastics, synthetic fibers, and other polymeric materials.
• Research & Development: Serves as a reference standard and starting material for developing novel chromophores and functional dyes.
• Specialty Coatings: Employed in the production of colorants for automotive, industrial, and decorative coatings.

Basic Information

Product Name	6-Hydroxy-n-(2-Hydroxyethyl)-n-Methyl-5-[[4-(Phenylazo)Phenyl]Azo]Naphthalene-2-Sulphonamide
CAS No.	58104-55-5
Molecular Formula	C25H24N6O4S
Molecular Weight	504.56 g/mol
Synonyms	Acid Red 337; C.I. 17200; 6-Hydroxy-N-(2-hydroxyethyl)-N-methyl-5-[(E)-2-[4-[(E)-phenyldiazenyl]phenyl]diazen-1-yl]naphthalene-2-sulfonamide; 5-[[4-(Phenylazo)phenyl]azo]-6-hydroxy-N-(2-hydroxyethyl)-N-methyl-2-naphthalenesulfonamide; Naphthalenesulfonamide, 6-hydroxy-N-(2-hydroxyethyl)-N-methyl-5-((4-(phenylazo)phenyl)azo)-; Azo dye intermediate RED 337
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity. Quality is verified through advanced analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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