1R1. For the purposes of subparagraph e of section 1 of the Act, the following substances are declared to be gasoline:(a) benzol and any blend of benzol with another substance;
(b) kerosene and turbo aviation fuel of the kerosene type, whatever their relative density may be, but only where used in aircraft engines; and
(c) propane gas, butane gas and liquefied petroleum gas.