From: Denise Beautreau <deb313**At_Symbol_Here**LEHIGH.EDU>
Subject: Re: [DCHAS-L] Safer heating devices
Date: Mon, 6 Aug 2018 11:00:03 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: CAG948wHUABnsECT0Z+U+u0qKVmJQXqibni7E3m9Nxueb2_qs7A**At_Symbol_Here**mail.gmail.com
In-Reply-To <1109037139E1524980CF9CBEB2476618010B264ABC**At_Symbol_Here**UMF-EX10EMB1.umflint.edu>


Hello Tilak,
We use hot plates for most of our aqueous solutions in the general chemistry teaching labs. We sometimes use ovens for drying as well as bunsen burner set ups, depending on the experimental limitations-temperature of heating required as well as timing (burners are quicker than hot plates). We also take into account the type of reaction and what would be safer. For example I know in the organic teaching labs water baths/steam baths are used, as well as heating blocks as these allow for a more controlled temperature ramping which helps with safety.


Regards,
Denise

On Mon, Aug 6, 2018 at 10:53 AM Wilhelm, Monique <mwilhelm**At_Symbol_Here**umflint.edu> wrote:

Hi Tilak,

In our TEACHING labs, we generally use water baths and other aqueous solutions on hot plates in gen chem labs. In orgo labs, we use custom made aluminum blocks from J-KEM. They fit the sized round bottoms that we use and we cushion the bottom just a little bit with sand to avoid too snug of a fit. These blocks are used on top of stirring hot plates. There is ONE lab in our advanced synthesis course during which they are shown how to properly use an oil bath for heating.

Kind Regards,

Monique Wilhelm

Laboratory Manager

Department of Chemistry & Biochemistry

University of Michigan - Flint

From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of TILAK CHANDRA
Sent: Wednesday, July 25, 2018 2:34 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] Safer heating devices

Hi All:

I am interested in knowing about the safer heating devices such as heating blocks, sand bath, oil bath etc. for the chemistry-teaching labs. Generally, what type of heating devices are used in your chemistry-teaching labs for the chemical reactions and other manipulations? Any feedback will be highly helpful.

Thank you very much for your help in advance.

Tilak

Tilak Chandra, Ph.D.

Chemical Safety Specialist

UW-Madison

tilak.chandra**At_Symbol_Here**wisc.edu

Ph. 608-890-0255

608-622-9761 (Cell)

"--our job in safety is to make the task happen, SAFELY; not to interfere with the work-" Neal Langerman

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--
Denise Beautreau
General Chemistry Laboratory Manager
Lehigh University
Department of Chemistry
Seeley G. Mudd Building
6 E Packer Ave
Bethlehem, PA 18015
Phone: 610-758-1585
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