Propylene oxide Other Chinese names Propylene oxide; PO; methyloxirane; (±) - propylene oxide CAS RN 75-56-9 Formula C3H6O Molecular weight 58.08 Structural formula Characters Colorless, flammable liquid with a low boiling ether odor. Industrial products as a racemic mixture of two optical isomers. Melting Boiling point of 34.24 ℃ Freezing point -112.13 ℃ The relative density of 0.859 Refractive index 1.3664 Flash point <-37 ℃ Partially miscible with water solubility [20 ℃ water solubility of 40.5% (by weight); water solubility in propylene oxide 12.8% (by weight)], and ethanol, ether and dichloromethane, pentane, pentene, cyclopentane, cyclopentene, etc. form a binary azeotrope. Use Important petrochemical raw materials for the production of polyether, propylene glycol, surfactants, foaming agents, demulsifiers, pharmaceutical processing, etc.

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