DCHAS-L Archives, Jul 3, 2024 - Re: [DCHAS-L] Methylene chloride in teaching labs

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Date: Jul 3, 2024 20:03 UTC

Author: Jack Brown <orgchem1954**At_Symbol_Here**GMAIL.COM>

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Date: Jul 3, 2024 20:54 UTC

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From: Jeffrey Lewin <jclewin**At_Symbol_Here**MTU.EDU>

Subject: Re: [DCHAS-L] Methylene chloride in teaching labs

Date: Jul 3, 2024 20:14 UTC

Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>

Message-ID: <CAEwQnqjikUKGfRLWfWaZEpswXLmDuoMrBjHAhHtUtdrZt2pefA**At_Symbol_Here**mail.gmail.com>

In-Reply-To: <DM3PR08MB9587AF79C8FADAF93A3A44E4A3DC2**At_Symbol_Here**DM3PR08MB9587.namprd08.prod.outlook.com>

Kimi Brown posted her blog post a few weeks ago: https://www.scishield.com/community-hub/how-the-epa-ban-of-methylene-chloride-will-impact-laboratories

In it she states (bold is my emphasis):

"The EPA sought to keep their methylene chloride rule consistent with existing health and safety regulations for this chemical; however, it differs from the 1997 OSHA standard in some key ways. OSHA standards cover worker protection, but the EPA methylene chloride rule under TSCA applies to all “potentially exposed persons,” which is inclusive of not just workers, but also university students, volunteers, self-employed persons, and state and local government workers not covered by a state occupational health and safety plan."

On Wed, Jul 3, 2024 at 10:58 AM Alex Hagen <fischera**At_Symbol_Here**uw.edu> wrote:

Good afternoon,

Like many others, our institution is currently trying to assess the impacts of the new methylene chloride regulation from EPA, and a question has come up around use of this chemical in teaching labs. Our chemistry department currently uses methylene chloride for some of their higher level courses. Do activities with methylene chloride conducted in teaching labs qualify as “commercial use as a laboratory chemical”?

How is your institution addressing this issue (if it is relevant for you)?

Any input is appreciated!

Regards,
~Alex

ALEX HAGEN, CCHO

Laboratory Safety Inspection Program Manager

Environmental Health & Safety Department

fischera**At_Symbol_Here**uw.edu / www.ehs.washington.edu

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org

Jeff Lewin

Director of Chemical Laboratory Operations

RISSC Team

Office of General Council

Michigan Technological University

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org

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