Generally, a mixture of pentane and isopentane is used, with a weight ratio 85/15, 80/20, 75/25, or 70/30%. Alternative propellants are for instance n-propane, n-butane, isobutane, neo-pentane, cyclopentane, n-hexane, or cyclohexane, or a halogenated hydrocarbon such as dichlorodifluoro...