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Previous by Date: Subject: [DCHAS-L] Chemical Safety headlines (6 articles) Date: Friday, October 23, 2020 at 6:59:04 AM Author: DCHAS Membership Chair <membership**At_Symbol_Here**DCHAS.ORG> |
Next by Date: Subject: [DCHAS-L] CSB Public Business Meeting October 29, 2020 Date: Fri, 23 Oct 2020 14:30:36 -0400 Author: DCHAS Membership Chair |
I can help to define specific hazard categories to capture these incidents. Please note that defining a material as pyrophoric has serious implications under the Fire Code as well as how it is handled. This may also leave the uninformed the impression that they are dealing with a pyrophoric rather than a reactive material with very different PPE and procedure
Eugene Ngai
Chemically Speaking LLC
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of NEAL LANGERMAN
Sent: Thursday, October 22, 2020 2:19 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Horror stories
I am really confused- since when is diethyl ether pyrophoric? And I could go on.
With all due respect, the CHAS list server supports solid chemistry. Please, whoever put this together, go back and edit it for factual correctness. If you need help sorting this list, there are many of us who will chip in.
I look forward to seeing consolidated data such as this presented in a meaningful manner.
nl
Stay healthy and stay safe
NEAL LANGERMAN, Ph.D.
5340 Caminito Cachorro
San Diego 92105
+1 (619) 990-4908
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Carmen Nitsche
Sent: Wednesday, October 21, 2020 4:47 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Horror stories
The beauty of a crowdsourced resource is your personal agency to add things you feel should be on the list.
So, please don't just question - add your valuable contribution. You can add to the notvoodoo pyrophorics list here: http://chem.chem.rochester.edu/~nvd/pages/collective_wisdom.php?page=pyrophoric_reagents
by clicking the ADD YOUR OWN button on top right
Same goes for the Chemical Safety Library. If you have participated in/witnessed/ or otherwise encountered laboratory reaction incidents that have lead to injury or death (or even a "near miss") by all means submit it!! https://safescience.cas.org/
Our collective sharing of our experiences can help make everyone safer. Thanks, all! -Carmen
Carmen Nitsche
CCDC Inc.
On Oct 21, 2020, at 5:37 AM, Eugene Ngai <eugene_ngai**At_Symbol_Here**comcast.net> wrote:
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Just curious. Why would water reactive corrosive liquids like Titanium tetrachloride and Phosphorus oxychloride (POCl3 make a list for pyrophoric? They are not
Why did silane or disilane both pyrophoric not make this list? Numerous accidents and fatalities
Eugene Ngai
Chemically Speaking LLC
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Carmen Nitsche
Sent: Tuesday, October 20, 2020 12:20 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Horror stories
This seems a good time to remind everyone of the wonderful NOTVOODOO resource Alison Frontier (University of Rochester) has put together. There are several safety related pages - including the Rookie Mistakes section http://chem.chem.rochester.edu/~nvd/pages/rookie_mistakes.php
And she also encourages community tracking of incidents - such as fires and explosions caused by pyrophoric agents - to highlight high risk/oft repeated incidents.
I am excited that she is planning on adding top reaction incidents from the Chemical Safety Library (CSL), with a similar page.
Speaking of the CSL, did you see the announcement about the next phase of the Chemical Safety Library? Pistoia Alliance and CAS have teamed up to offer a new platform for this community crowdsourced safety database of laboratory reaction incidents. Check it out and please consider contributing for the safety of all!!! https://www.cas.org/resources/press-releases/chemical-safety-library
Warm regards, --Carmen
Carmen Nitsche
CCDC Inc.
On Monday, October 19, 2020, 01:41:49 PM EDT, Daniel C Herrick <herrickd**At_Symbol_Here**mit.edu> wrote:
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-----
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of davivid
Sent: Friday, October 16, 2020 10:08 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Horror stories
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.
Another one
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.
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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