4 ms·

ITYM ClF3 (Chlorine Trifluoride) which earned the now famous description "hypergolic with test engineers". https://blogs.sciencemag.org/pipeline/archives/2008/0

ITYM ClF3 (Chlorine Trifluoride) which earned the now famous description "hypergolic with test engineers". https://blogs.sciencemag.org/pipeline/archives/2008/02/26/sand_wont_save_you_this_time https://blogs.sciencemag.org/pipeline/archives/2008/02/26/sa... Equally funny is where someone thought that it would be a wonderful idea to burn mercaptans in a rocket, which wasn't quite as toxic, but caused the test site to become a no-go zone just from the unbearable stench.

UnFleshedOne 7y ago
Stench on toxic substances is a feature, not a bug :)
jabl 7y ago
As described in Clark's book, ClF3 was discovered first (before WWII actually). But sometime later someone managed to synthesize ClF5 as well, which had slightly better performance as a rocket fuel oxidizer. Although it retained all the other fun properties of ClF3.