From:
Ryan, Patrick <patrick.ryan6**At_Symbol_Here**MONTANA.EDU>
Subject:
Re: [DCHAS-L] LSI Free Webinar on DCM Regulations
Date:
Jul 5, 2024 15:45 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<SJ2PR02MB938929866AB221D13609C30CBCDF2**At_Symbol_Here**SJ2PR02MB9389.namprd02.prod.outlook.com>
In-Reply-To:
<CANkUwAq3BpB7hmRnysc_qkCZhrv7rLXv=B8ZGbzs_1M4rZZy-Q**At_Symbol_Here**mail.gmail.com>
Jon,
Your summary is totally on target and consistent with RAMP principles.
Patrick A. Ryan, CIH, CSP, CHMM
Hazardous Materials Manager - Montana State University
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of Jonathan Klane
Sent: Thursday, July 4, 2024 9:13 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] LSI Free Webinar on DCM Regulations
**External Sender**
This is a great opportunity for the top two categories of the hierarchy of hazard controls - elimination or substitution.
Does your lab/operation need to use MeCl/DCM anymore? Do the costs outweigh the benefits?
Or is there a feasible substitute with far less toxicity and requirements your process could substitute?
I'm no chemist, so you're on your own to assess and determine this. I'm just the risk perceptions guy and storyteller. :-)
Jonathan Klane, M.S.Ed., CIH, CSP, CHMM, CIT
Senior Safety Editor, Lab Manager Magazine
PhD candidate, Human + Social Dimensions of Science + Technology
College of Global Futures
School for the Future of Innovation in Society
Please encourage students not to use DCM, since it is headed down the same road as carbon tetrachloride and chloroform.
As far as the pharmaceutical industry is concerned; we have been encouraging the development of processes not using DCM as a solvent; it's expensive and requires additional controls to use in a manufacturing environment. Especially on venting
reactors and any off-gassing, since condensing DCM vapors is challenging or running them through a thermal oxidizer requires special conditions
Past-Chair Virginia Section of the ACS
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