Description

4-Nitrosophenol is a versatile organic intermediate characterized by its distinct nitroso (-NO) and phenolic (-OH) functional groups. This compound is highly valued for its role as a key building block in the synthesis of more complex molecules, particularly dyes, pigments, and pharmaceuticals. Industries such as specialty chemicals, agrochemicals, and research & development rely on consistent, high-purity supplies of this material for their synthetic processes.

Application

• Dye and Pigment Intermediate: A crucial precursor in the manufacturing of azo dyes and other complex colorants.
• Pharmaceutical Synthesis: Serves as a building block for active pharmaceutical ingredients (APIs) and other fine chemicals.
• Agrochemical Production: Used in the synthesis of certain herbicides and plant growth regulators.
• Photographic Chemicals: Employed in specific photographic development processes.
• Research & Development: Utilized in organic chemistry research for studying nitroso chemistry and as a reagent.
• Polymer Modification: Acts as a functional monomer or modifier in specialty polymer formulations.
• Corrosion Inhibitor Formulation: A component in certain industrial corrosion inhibitor blends.
• Analytical Reagent: Used in specific chemical analysis and detection methods.

Basic Information

Product Name	4-Nitrosophenol
CAS No.	104-91-6
Molecular Formula	C6H5NO2
Molecular Weight	123.11 g/mol
Synonyms	p-Nitrosophenol; 4-Hydroxynitrosobenzene; Quinone monoxime; 1,4-Benzoquinone monoxime; NSC 403697; USAF EK-3940; Nitrosophenol; Phenol, 4-nitroso-
EINECS	203-251-2

Quality Control

Our 4-Nitrosophenol is produced under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation (IR), to ensure it meets exacting standards for industrial and research applications. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is light-sensitive (store away from light) and should be handled to minimize prolonged exposure to air and moisture.

Specification

Item	Specification
Appearance	Brown to yellow-brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	124 - 128 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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