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Previous by Date: Subject: Re: [DCHAS-L] nitric acid distillation Date: Monday, October 19, 2020 at 1:06:19 PM Author: pzavon**At_Symbol_Here**ROCHESTER.RR.COM |
Next by Date: Subject: Re: [DCHAS-L] nitric acid distillation Date: Mon, 19 Oct 2020 13:09:37 -0400 Author: Jeffrey Lewin |
How about the postdoc who was unpacking boxes and dropped the bottle of hydroiodic acid on the floor. It broke, and since he was wearing sandals with socks (seriously?), the HI got on his foot. He then ran down the hall to the men's room to rinse rather than use the safety shower in lab, because in that building the safety showers don't have drains and he didn't want to get water all over the lab. This of course changed a "minor" incident into a "major" one.
The researcher was ok, but the floor in the lab has never recovered - it is permanently stained.
Thanks
Dan
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Daniel C. Herrick, CIH
Senior EHS Coordinator
Mechanical Engineering Department (MechE)
Massachusetts Institute of Technology (MIT)
77 Massachusetts Avenue, room 3-449g
Cambridge, MA 02139
Email herrickd**At_Symbol_Here**mit.edu
Web http://mecheehs.mit.edu
http://ehs.mit.edu
Phone 617-253-2338 (MIT: x3-2338)
-----Original Message----- This thread about nitric acid distillation got me thinking. One thing that I think would be useful, educational, and entertaining is a collection of laboratory "Horror Stories". I'm sure every experienced chemist has a few. These could be a means of motivating and educating the public as well as other chemists. Think of these as chemistry "morality tales". No obtuse jargon, no lengthy analysis. Just some good old fashioned story telling. Youtube channel anyone? A couple of my favorites A low boiling solvent condensed in a liquid nitrogen cooled trap. When the dewar was removed the twisted vacuum tubing flipped the trap upside down sending the cold solvent into the rotary vacuum pump that had been running overnight. The overpressure created by flash boiling when the solvent hit the hot oil split the pump casing at the casting seam. There was an attempt to grind a material in a ball mill. Unfortunately the material was too soft. So the researcher added liquid nitrogen, sealed up the heavy ceramic ball mill and proceeded to grind as usual. --- ---
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From: ACS Division of Chemical Health and Safety
Sent: Friday, October 16, 2020 10:08 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Horror stories
Another one
Fortunately they mentioned their cleverness to a supervisor who promptly had everyone get to safety before the inevitable explosion.
Cheers!
Dave Lane
Principal
Clavis Technology Development
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