Azoxybenzene

Updated: 2026-09-13

Overview

Azoxybenzene is an organic compound belonging to the azoxy group, characterized by the presence of an azoxy functional group (-N=N(O)-) linking two phenyl rings. It is primarily used in chemical research and industrial applications, particularly as an intermediate in the synthesis of dyes and other specialized chemicals. First synthesized in the late 19th century, azoxybenzene has since found niche applications due to its unique chemical properties. Its stability and reactivity make it a valuable building block in organic chemistry, though it is less common in large-scale industrial processes compared to simpler aromatic compounds.

Physical and Chemical Properties

Azoxybenzene is a yellow crystalline solid at room temperature, with a melting point of 36-38°C. It is soluble in common organic solvents such as ethanol, ether, and benzene but is practically insoluble in water. The compound is relatively stable under standard conditions but can decompose when exposed to strong heat or ultraviolet light. The azoxy group imparts distinctive reactivity, allowing the compound to participate in reduction and oxidation reactions. It can be reduced to hydrazobenzene or oxidized under specific conditions. These properties are exploited in synthetic chemistry to create more complex molecules, particularly in the dye and pharmaceutical industries.

Main Applications

The primary use of azoxybenzene is as a chemical intermediate in the synthesis of dyes, particularly azo dyes, which are widely used in textiles, inks, and plastics. Its ability to form stable colored compounds makes it valuable in this sector. In research, azoxybenzene serves as a model compound for studying the behavior of azoxy groups in organic reactions. It is also used in the preparation of liquid crystals and other advanced materials, though these applications are more specialized and less common.

Safety and Storage

Azoxybenzene should be handled with care to avoid exposure. It may cause irritation to the skin, eyes, and respiratory tract upon contact or inhalation. Proper personal protective equipment (PPE), including gloves and goggles, is recommended when working with this compound. Storage should be in a cool, dry place, away from direct sunlight and oxidizing agents. Containers must be tightly sealed to prevent moisture absorption and degradation. In case of spills, absorb with an inert material and dispose of according to local regulations.

B2B Procurement Guide

Industrial buyers should prioritize suppliers that provide detailed technical specifications, including purity levels (typically 95-99%) and CAS number verification. Bulk purchases often come with cost advantages, but buyers should confirm storage and handling recommendations from the supplier. Quality control is critical, especially for applications in dye synthesis or pharmaceuticals. Request certificates of analysis (CoA) and ensure the supplier complies with relevant safety and environmental standards. Lead times may vary depending on the supplier's stock and production capacity.