Oxirane(CAS: 75-21-8)

Oxirane, also known as epoxyethane, has a molecular weight of 44.05 g/mol and is a colorless to slightly yellowish gas at room temperature. It has a boiling point of 3.7°C and a melting point of -111.5°C. Oxirane is highly soluble in water and ether. It is a reactive compound, readily participating in addition and substitution reactions.

Oxirane is typically synthesized by the oxidation of ethylene. A common method involves the reaction of ethylene with oxygen in the presence of a metal catalyst, such as silver. The process requires careful control of temperature and pressure to achieve high selectivity and yield.

Oxirane is widely used in the pharmaceutical, polymer, and semiconductor industries. In pharmaceuticals, it is used as a building block for the synthesis of various drugs. In polymers, it is used to produce epoxy resins that are used in coatings, adhesives, and composites. In semiconductors, oxirane derivatives are used in the manufacture of photolithographic resists and protective coatings.

Proper precautions must be taken when handling oxirane. It should be handled in a fume hood, and personal protective equipment such as gloves, goggles, and protective clothing should be worn. Spills should be cleaned up immediately with appropriate absorbents. Safety data sheets (SDS) should be consulted for detailed information on handling and emergency procedures. Oxirane is highly reactive and can be toxic if inhaled or ingested. Storage should be in a cool, well-ventilated area away from sources of ignition and incompatible materials.