Xenon xe Rare gases Cas no.: 7740-63-3 Einecs no.: 237-251-2 Un no.: un2036 Purity: 99.999% Dot class: 2.2 Appearance: colorless Grade standard: electron grade, industrial grade Light source: Xenon could be used for inflat the bulbs and navigation light in airport, bus staion, wharf etc. Medical use: Xenon is a kind of anesthesia with no side effects of x-ray contrast agents.