(v)"compressed gas" means any permanent gas, liquefiable gas or gas dissolved in liquid under pressure or gas mixture which in a closed gas cylinder exercises a pressure either exceeding 2.5 kgf/cm2 abs (1.5 kgf/ cm2 gauge) at + 15° C or a pressure exceeding 3kgf/ cm2 abs (2 kgf/ cm2 gauge) at + 50° C or both including cryogenic liquids;
