. . . "Also suitable are unsaturated or saturated aliphatic and cyclic hydrocarbons having from one to nine carbons such as methane, ethane, propane, n-butane, isobutane, n-pentane, isopentane, cyclopentane, hexane, cyclohexane, heptane, octane, propene, 1-butene, 1-pentene, isopentane and 2,2-dimethylbutane; aliphatic alcohols having from one to five carbons such as" .