"Liquefied petroleum gases" means any material which is composed predominantly of any of the following hydrocarbons, or mixtures of them: propane, propylene, normal butanes, iso-butanes and butylenes.
430 ILCS 5/1
Definition
Known as the Liquefied Petroleum Gas Regulation Act
The act spans §§ 430-5-0-01 to 430-5-4 (6 sections).
Laws 1955, p. 1547.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.