And that totally makes sense with the research they were doing.
Thank you!
Rose
-----Original Message-----
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of davivid
Sent: Friday, June 7, 2024 3:43 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] zipper catalysts
Hi Rose
These are most likely organometallic alkene isomerization catalysts.
There are a variety of these in the literature. These are composed of the named metal decorated with various ligands, possibly a phosphine or carbonyl (carbon monoxide). They are unlikely to incorporate reactive hydrogen. The ligands are bound to the metal and are unlikely to pose a significant hazard. See ferricyanide for example. They are stored in the glovebox because they are air-sensitive, the functionality being destroyed by oxygen.
I've worked with air-sensitive catalysts before and the most dramatic thing that usually happens on air exposure is the catalyst changes color and stops working.
I would deal with them by removing the vials from the glovebox and letting them stand overnight in air in case they aren't tightly sealed.
Then, I would gently "crack" open the vials just enough to break the seal and let them stand again. The vials can then be opened to air and allowed to stand once more. When the reactivity is "killed" I would dispose of them in inorganic waste.
Best regards
Dave Lane
CSO
Zyviva Labs
On 6/7/24 5:40 AM, Rakers, Rose wrote:
> We had a professor leave before being able to do a complete cleanout
> of her lab. I have some substances that I am having a hard time
> determining the hazards. They are all in a glovebox right now. I need
> to remove them in order to get rid of them (plus the glove box just
> needs to be shut down – the pump is dying and we don’t have anyone
> else who needs the glove box right now).
>
> Specifically, there are two small vials hand-labeled “Zipper Copper”
> and “Zipper Cobalt”. I’m not familiar with the zipper metal catalysts
> and, of course, that is the entirety of the information I have on them.
>
> Any information you can provide would be helpful.
> Thank you.
>
> Rose
>
> *Rose Rakers, Ph.D.*
>
> Chemical Hygiene Officer
>
> Assistant Professor
>
> Department of Physical Science
>
> College of Science and Health
>
> Benedictine University
>
> Lisle, IL
>
> --- For more information about the DCHAS-L e-mail list, contact the
> Divisional membership chair at membership**At_Symbol_Here**dchas.org
> <mailto:membership**At_Symbol_Here**dchas.org>
---
For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org
---
For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org