Description

7-[[[[4-(Acetylamino)Phenyl]Amino]Carbonyl]Amino]-4-Hydroxy-3-[(2-Methylphenyl)Azo]-2-Naphthalenesulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its precise molecular structure is engineered for consistent performance as a key precursor in the synthesis of specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking reliable intermediates for producing vivid and stable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of complex, high-performance azo dyes, particularly for textile fibers like cotton and nylon.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics where color strength and stability are paramount.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Reagent: Can be utilized as a standard or reagent in analytical methods for dye identification and quality control.

Basic Information

Product Name	7-[[[[4-(Acetylamino)Phenyl]Amino]Carbonyl]Amino]-4-Hydroxy-3-[(2-Methylphenyl)Azo]-2-Naphthalenesulfonic Acid Sodium Salt
CAS No.	6369-37-5
Molecular Formula	C26H22N6O6SNa
Molecular Weight	569.55 g/mol
Synonyms	7-[[[[4-(Acetylamino)Phenyl]Amino]Carbonyl]Amino]-4-Hydroxy-3-[(2-Methylphenyl)Azo]-2-Naphthalenesulfonic Acid Sodium Salt; C.I. Acid Orange 156; Acid Orange 156; Sodium 4-hydroxy-3-[(2-methylphenyl)azo]-7-[[[[4-(acetylamino)phenyl]amino]carbonyl]amino]-2-naphthalenesulfonate; 7-[(4'-Acetamidophenyl)ureido]-4-hydroxy-3-[(o-tolyl)azo]-2-naphthalenesulfonic Acid Sodium Salt; o-Tolylazo-7-(4'-acetamidophenylureido)-4-hydroxy-2-naphthalenesulfonic Acid Sodium Salt
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 high purity. Each lot is analyzed using advanced techniques like HPLC to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with every 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 room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear solution

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