Description

7-[[3-(Acetylamino)Benzoyl]Amino]-4-Hydroxy-3-[[2-Methyl-4-[(2-Methyl-4-Sulphophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonic Acid is a high-purity, synthetic azo dye intermediate of significant industrial importance. This compound is valued for its role in producing vibrant and stable colorants, particularly in applications requiring specific shade and fastness properties. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries for the synthesis of advanced dyes and pigments.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-performance azo dyes for textiles and fibers.
• Textile Dyeing and Printing: Used to produce dyes that impart color to natural and synthetic fabrics, valued for color strength and consistency.
• Ink Formulation: Employed in the manufacture of pigments for industrial inks, including those used in packaging and specialty printing.
• Specialty Pigments: A precursor for creating pigments used in coatings, plastics, and other colored polymer applications.
• Research & Development: Utilized in chemical R&D for developing new chromophores and studying structure-property relationships in dye chemistry.
• Analytical Reagents: Can be used as a standard or reagent in analytical methods for dye identification and quality control.

Basic Information

Product Name	7-[[3-(Acetylamino)Benzoyl]Amino]-4-Hydroxy-3-[[2-Methyl-4-[(2-Methyl-4-Sulphophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonic Acid
CAS No.	94108-92-6
Molecular Formula	C33H27N5O8S2
Molecular Weight	685.72 g/mol
Synonyms	Acid Red 337; C.I. 17200; 7-[[3-(Acetylamino)benzoyl]amino]-4-hydroxy-3-[[2-methyl-4-[(2-methyl-4-sulfophenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid; 2-Naphthalenesulfonic acid, 7-[[3-(acetylamino)benzoyl]amino]-4-hydroxy-3-[[2-methyl-4-[(2-methyl-4-sulfophenyl)azo]phenyl]azo]-; C.I. Acid Red 337; Azo dye intermediate 94108-92-6; Red 337
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity for demanding industrial applications. Quality is verified through advanced analytical techniques including HPLC, spectrophotometry, and titration. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each 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 a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in water)	Partially soluble, forms colloidal solution

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