I agree that these should be captured however it should be in a separate category so that they are not confused as being pyrophoric. These are Water reactive Corrosive. There are many compounds that are routinely used that have properties similar to POCl3 and TiCl4 such as BBr3, TaCl5, SiCl4, TCS, HfCl4, GeCl4, SiCH3Cl3, Si2Cl6, etc
Eugene Ngai
Chemically Speaking LLC
www.chemicallyspeakingllc.com
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Yaritza Brinker
Sent: Wednesday, October 21, 2020 4:17 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Horror stories
Although Titanium tetrachloride and Phosphorus oxychloride are not pyrophoric, they do present an explosion hazard. Since there isn't a heading for explosive materials in the database, the pyrophorics list probably seemed like a good "bucket" to classify the information.
I do think that having materials that aren't pyrophorics in a pyrophorics list could cause confusion among the users.
Thank you,
Yaritza Brinker
260.827.5402
Well said Carmen!
From the perspective of a graduate student still stumbling through, I have so often had the experience of people being stunned by what I "don't know" when it comes to chemical safety, yet when I ask for a citation or resource for the bit of knowledge, no one seems to have one. It is apparently just magical knowledge floating out there on the wind that I somehow missed.
Thank you so much for the work that you are doing with CAS and Pistoia Alliance to create an accessible database of this information so that we no longer have to rely on magic.
Best,
NSF Graduate Research Fellow
Pinkhassik Group, Department of Chemistry
University of Connecticut
"To change a community, you have to change the composition of the soil-
If you want to meet with me, come to the garden with your shovel so we can plant some sh-t."
"Argue for your limitations
and sure enough they're yours."
"You know, farming looks mighty easy
when your plow is a pencil, and you're
a thousand miles from the corn field."
"When you start an administrative job, glean institutional memories and lore
from prior leaders before it all dies in the black holes of their souls."
Peter Dorhout quoting somebody brilliant
*Message sent from a system outside of UConn.*
The beauty of a crowdsourced resource is your personal agency to add things you feel should be on the list.
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
=EF=BB=BF
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
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
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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