Oh man, that’s just bad lab-keeping. Shaaame. No safety officer for the lab? Not all their procedures that start off with:
Step 1. Clear your workspace and check both above and below for interesting chemicals that might pose a risk?
Also, when I was in high school chem, anything we were doing that could offgas, go rapidly exothermic, or likely catch on fire was done in one of the lab’s two fume hoods. We didn’t have gas taps on the wall. The most dangerous stuff we did outside of the fumehood was stuff like brass plating pennies.
Oh, there was the time we made fragrances from methyl ethyl ketone and various high-order alcohols. And that was dangerous because one idiot tried drinking the sample of pentanol and wretched all over the eyewash station. Dumbass.
