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Subject:
[DCHAS-L] New Article
Date:
May 21, 2025 09:56 UTC
Author:
000006c59248530b-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU
From:
Kayla Johnson (she/her) <Kayla.L.Johnson**At_Symbol_Here**UVM.EDU>
Subject:
Re: [DCHAS-L] DCM Rule Implementation – Seeking Peer Insights and Collaboration
Date:
May 21, 2025 14:43 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<MN0PR01MB7732AFCE6564E4320213B553AD9EA**At_Symbol_Here**MN0PR01MB7732.prod.exchangelabs.com>
In-Reply-To:
<CAN588PrvwrfvcBf8oPO7zGhSBbYeZ0VD_15AMtCx+TvHuJNOEg**At_Symbol_Here**mail.gmail.com>
Hi Sane,
Here's a link for different glassing agents for EPR use. As you can see, there are various options for different compounds of interest. We are also working out some of the issues you are facing in our own institution.
Best,
Kayla Johnson, MS (she/her)
Laboratory Safety Coordinator
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> on behalf of Saneliswa Magagula <saneliswam**At_Symbol_Here**GMAIL.COM>
Sent: Tuesday, May 20, 2025 5:34 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Subject: [DCHAS-L] DCM Rule Implementation – Seeking Peer Insights and Collaboration
Hello DHAS community,
I’m reaching out to connect with colleagues at higher education institutions who are responsible for implementing the new DCM (dichloromethane) rule. At our institution, we’re actively exploring strategies for compliance, but we are encountering some challenges—particularly
with researchers for whom DCM remains critical.
Examples include:
-Synthetic organic chemistry where DCM is required for specific reaction conditions or to isolate target molecules.
-Use of DCM as a mobile phase or co-solvent in flash chromatography systems.
-EPR (electron paramagnetic resonance) experiments needing solvent mixtures that form glass at cryogenic temperatures.
-Solubility constraints - where after exploring alternatives, DCM is the only effective solvent for certain organic or inorganic compounds.
I'm interested in hearing about your substitution efforts for your DCM applications—what has worked, what hasn’t?
What about your use of engineering controls - Have snorkels been adequate when fume hoods aren’t feasible (for large equipment).
I'd love to read/hear about your experiences.
Please feel free to reach out directly or drop your contact info if you're open to an informal conversation.
Thank you.
~Sane
_______________________________________________________
Saneliswa Magagula, ASP
Chemical Safety Officer
University of Denver
Phone: 3038714044
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