Original sentence: Butane is less volatile and boils at 0.6 deg C.Butane is like the propane gas, the two are both saturated hydrocarbons and do not react with each other so they are regularly mixed together to form Butane/Propane gas mixture.Propane is more volatile and boils at - 42 deg C
Edited sentence: Butane and propane do not react with each other and are regularly mixed together.Butane boils at 0.6 deg C.Butane, like propane, is a saturated hydrocarbon.Propane is more volatile, with a boiling point of - 42 deg C