1.colorless, heavy, odoeless, noble gas 2.grade:99.9%~99. ... compressed gas. A member of the group of Noble Gases.1.Xenon gas is a colorless, heavy, odorless noble/rare gas ... /lb@NTPNontoxic - Simple Asphyxiant80A750 Boiling Point: -162.6°F(-108.1°C) @1 atm80750 CAS No.: 7440-63-3 Hazards: Simple asphyxiant DOT ...