We made some H2S in a High School chemistry lab class and wound up having to evacuate the building. And this was actually part of the lesson for the day—not the evacuation part, but the experiment part.OldCurlyWolf wrote:I am very aware of Hydrogen Sulfide (H2S). It is used to make ethyl and methyl mercaptan (odorants for Natural Gas so you can smell a leak).WildBill wrote:One of the comments on the article suggested that this was a former NASA employee who got laid off. Who ever it was, it sounds like it was well thought out and he took care so that no first responders would be injured. BTW, hydrogen sulfide [rotten egg smell] is more deadly than hydrogen cyanide, the gas that was used in California's gas chamber.The Annoyed Man wrote:A responsible suicide. Wow.WildBill wrote:"The car was clearly identified as having a poisonous gas," Martin said. "He did make preparations to notify emergency responders, so they would not become involved in the incident as well."l
Here's another link. The man was indentified as Jaideep Sen, 47, of Webster. Authorities found a note with a New York relative’s phone number and instructions, Florence said.
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We were taught that when in deadly concentrations you can smell the first breath, then it kills the smell receptors, you don't smell the second and the third kills you. Very bad stuff.
Each pair of students mixed equal molar fractions of Iron and Sulphur in a test tube (I forget the weights); heated the mixture over a bunsen burner until it reacted, forming a pellet of FeS; immersed that pellet in HCl under a vent; and voila! FeS + 2 HCl → FeCl2 + H2S. (It's been 44 years, so I think I'm remembering the process correctly. If there's a chemist here to correct me, feel free to do so.) There were 10 or so pairs of students doing this same thing. Anyway, it turned out that the chem lab's vent system was tied into the building's AC system at the wrong point, or cross-linked, or something like that, and all the classroom's in the school's new science building had to be evacuated due to a strong rotten egg smell. I didn't learn until later how dangerous the situation had been. The scary part is that this was the actual lesson. It wasn't just somebody messing around. Fortunately, nobody got hurt.
Webb School for Boys, Claremont, California circa 1967-68.... the day that a hundred or so scions of America's wealthiest families were nearly knocked off en-masse by a dumb accident. I was there, directly involved, but you'll never hear about it anywhere else.