Description

2-Nitro-4-Phenylazophenol CAS NO 55936-40-8 is an azo dye intermediate characterized by its distinct molecular structure, which is pivotal for imparting specific color properties. This compound is valued for its role in synthesizing high-performance pigments and dyes with excellent lightfastness and thermal stability. It is primarily required by manufacturers in the pigments, dyes, and specialty chemical industries for applications demanding precise color characteristics.

Application

• Primary Intermediate for Azo Pigments: A key building block in the synthesis of high-performance organic pigments used in paints, inks, and plastics.
• Dye Manufacturing: Used in the production of specialized dyes for textiles, leather, and paper products.
• Research & Development: Serves as a crucial reagent in chemical research for developing new chromophores and studying azo coupling reactions.
• Colorant for Industrial Coatings: Imparts specific yellow to orange hues in industrial coatings requiring durability.
• Analytical Chemistry: Potential use as a pH indicator or a complexometric agent in laboratory settings due to its azo-phenolic structure.
• Specialty Chemical Synthesis: Acts as a precursor for more complex chemical entities in pharmaceutical and agrochemical research.

Basic Information

Product Name	2-Nitro-4-Phenylazophenol
CAS No.	55936-40-8
Molecular Formula	C12H9N3O3
Molecular Weight	243.22 g/mol
Synonyms	4-[(E)-Phenyldiazenyl]-2-nitrophenol; 2-Nitro-4-(phenylazo)phenol; 4-Phenylazo-2-nitrophenol; Phenol, 2-nitro-4-(phenylazo)-; C.I. Solvent Yellow 7 (related); Azoic Coupling Component; Light-sensitive azo compound
EINECS	Contact for details

Quality Control

Our production of 2-Nitro-4-Phenylazophenol adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including HPLC and spectroscopy to confirm identity and assay. Certificates of Analysis (COA) documenting purity, impurities, and physical specifications are provided with every shipment to support your quality assurance processes.

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 heat, sparks, and open flame. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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