flarn2006 Posted March 7, 2010 Share Posted March 7, 2010 Are there any colored gases besides the halogens and NO2? Any that are non-toxic? Link to comment Share on other sites More sharing options...
Horza2002 Posted March 7, 2010 Share Posted March 7, 2010 Well technically O2 is blue...but you can only really see it in the condensed phase. Other than that, neon will change colour is you pass an electrical current through it (i.e. neon lights) Link to comment Share on other sites More sharing options...
UC Posted March 7, 2010 Share Posted March 7, 2010 Well technically O2 is blue...but you can only really see it in the condensed phase. Other than that, neon will change colour is you pass an electrical current through it (i.e. neon lights) So will almost all gases. http://en.wikipedia.org/wiki/Gas-discharge_lamp I know that chromyl chloride vapor is red, but chances are you don't want a volatile hexavalent chromium compound around. I imagine other colored volatile transition metal compounds behave similarly. Link to comment Share on other sites More sharing options...
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