Description

4-Nitrosoaniline is a versatile organic intermediate characterized by its distinctive nitroso functional group. This compound is valued for its role in the synthesis of dyes, pigments, and other complex aromatic chemicals. It is particularly relevant for manufacturers and R&D laboratories in the fine chemical, agrochemical, and specialty dye industries seeking reliable, high-purity building blocks.

Application

• Dye and Pigment Intermediate: A key precursor in the manufacture of azo dyes and other colorants.
• Pharmaceutical Synthesis: Used as a building block in the research and development of active pharmaceutical ingredients (APIs).
• Agrochemical Production: Serves as an intermediate in the synthesis of certain herbicides and pesticides.
• Chemical Research & Development: Employed in organic synthesis for the introduction of the nitroso group.
• Photographic Chemicals: Can be utilized in the formulation of specific photographic developers.
• Rubber & Polymer Additives: Acts as a component in the production of certain antioxidants or vulcanization agents.

Basic Information

Product Name	4-Nitrosoaniline
CAS No.	659-49-4
Molecular Formula	C6H6N2O
Molecular Weight	122.13 g/mol
Synonyms	p-Nitrosoaniline; 4-Aminonitrosobenzene; 1-Amino-4-nitrosobenzene; Benzenamine, 4-nitroso-; Nitrosoaniline; C.I. 76010; Para-Nitrosoaniline; 4-Nitrosobenzenamine
EINECS	211-531-5

Quality Control

Our 4-Nitrosoaniline is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for industrial and research applications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, it is recommended to handle under an inert atmosphere for long-term storage and to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	Green to brown crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	173 - 177 °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.