# Death-Breathing Dragon

I recently learned about a chemical known as chlorine trifluoride. This utter abomination of chemistry reacts to almost everything, setting glass, sand, asbestos, and rust on fire (to name only a few), and can only be loosely contained in a fluorine-treated metal container (the fluorine layer must not be damaged, at risk of explosion). This chemical is deadly beyond reason...

...and, as is typical with me, I started trying to combine it with other things. My question is this: Can a dragon-like creature be biologically designed to create and excrete this substance as a breath weapon? How many biological processes would have to be redesigned or completely handwaved to allow this? Can such a creature even exist in our atmosphere?

• I guess you haven't heard of $FOOF$ yet? $ClF_3$ has a use. $FOOF$ doesn't. – John Dvorak Dec 20 '16 at 23:50
• @JanDvorak I had actually heard of FOOF, from the XKCD What If on pressure cookers. From what I can tell, though, it decomposes at room temperature, making its effectiveness as a biological breath weapon somewhat nonexistent. – Lepidolite Mica Dec 21 '16 at 1:10
• If a dragon could biologically synthesize FOOF, it would probably explode. I suspect that ClF3 would have similar issues. – Thucydides Dec 21 '16 at 3:24
• Woah, what the heck? This exact question occurred to me just today. Good timing! – hexagon Dec 21 '16 at 3:48
• You could have it so the chlorine trifloride is produced as it is going out, so it doesn't hurt the dragon. – Grant Davis Dec 22 '16 at 0:24