@gsuberland @szakib @Dtl @funranium Yeah I read the whole post. Phil finds the craziest things.
Worst I've had to deal with over the years...
A bag of unlabelled gray powder that turned out to be something inert but was scary until we knew, given the previous lab user's love of energetics
A bottle of IPA that was old enough it measured 400ppm on a peroxide test strip
Some concentrated nitric acid that sat around long enough to weaken the cap so it disintegrated into dust when someone tried to open it
My worst spill, a bottle of NaOH based PCB photoresist developer that had sat around long enough that the plastic had gone super brittle. When I picked it up during a cleanout trying to turn it around and see the label, it split open at the seam and got all over the floor, my glove, and a few drops on my pant leg.