liquefiable gas definition

liquefiable gas means any gas that may be liquefied by pressure above at -100 C, but will be completely vaporised when in equilibrium with normal atmospheric pressure (760 mm Hg) at 300 C;
liquefiable gas means any gas that may be liquefied by pressure above -10 Degree celsius, but
liquefiable gas means a gas that may be liquefied by pressure at -10 0C but will be completely vaporized when in equilibrium with normal atmospheric pressure (760 mm. Hg) at 17.5°C which value shall be increased to 30°C for toxic gases;