Molecular Formula C5H8O Molecular Weight 84.12 CAS Registry Number 285-67-6 EINECS 206-005-6 Name Cyclopentene oxideSynonyms 1,2-Epoxycyclopentane; 6-Oxabicyclo[3.1.0]hexane Molecular Structure Molecular Formula C5H8OMolecular Weight 84.12CAS Registry Number 285-67-6EINECS 206-005-6 Properties Density 0.964Boiling point 102 ÂșCRefractive index 1.433-1.435Flash point 10 ÂșC Cyclopentene oxide