Description

7-(Acetylamino)-3-Hydroxy-4-[(2-Hydroxy-5-Methyl-3-Nitrophenyl)Azo]Naphthalene-1-Sulphonic Acid is a specialized azo dye intermediate with a complex molecular structure designed for high-performance applications. This compound matters for its ability to impart specific, vibrant color properties and excellent lightfastness in demanding environments. It is primarily needed by manufacturers in the textile, ink, and specialty pigment industries seeking to produce high-quality, durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-performance, polyazo dyes for textiles like wool, silk, and nylon.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for industrial paints, coatings, and plastics requiring specific hue and stability.
• Inkjet and Printing Inks: Employed in formulating advanced inks where color strength, clarity, and resistance to fading are critical.
• Research & Development: Acts as a reference standard or starting material in chemical research for developing new chromophores and functional dyes.
• Leather Dyeing: Suitable for dyeing leather goods, providing rich, penetrating colors with good adhesion.
• Paper Coloring: Used in specialty paper coloring applications for decorative or high-value papers.

Basic Information

Item	Detail
Product Name	7-(Acetylamino)-3-Hydroxy-4-[(2-Hydroxy-5-Methyl-3-Nitrophenyl)Azo]Naphthalene-1-Sulphonic Acid
CAS No.	58890-64-5
Molecular Formula	C19H16N4O7S
Molecular Weight	444.42 g/mol
Synonyms	Acid Red 337 (C.I. 17200); 7-Acetamido-3-hydroxy-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]naphthalene-1-sulfonic acid; C.I. 17200; Azo Dye Intermediate 58890-64-5; 1-Naphthalenesulfonic acid, 7-(acetylamino)-3-hydroxy-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-; 4-[(2-Hydroxy-5-methyl-3-nitrophenyl)azo]-3-hydroxy-7-acetamido-1-naphthalenesulfonic acid
EINECS	Contact for details

Quality Control

Our production of 7-(Acetylamino)-3-Hydroxy-4-[(2-Hydroxy-5-Methyl-3-Nitrophenyl)Azo]Naphthalene-1-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity, meeting the specific requirements of the dye and pigment industries. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics 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 minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Soluble

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