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Subject: Re: [DCHAS-L] Grassroots lab safety examples?
Date: Tuesday, October 10, 2017 at 4:33:08 PM
Author: "Stuart, Ralph" <Ralph.Stuart**At_Symbol_Here**KEENE.EDU> 		Next by Date:
Subject: Re: [DCHAS-L] Grassroots lab safety examples?
Date: Tue, 10 Oct 2017 19:54:33 -0400
Author: Mary Beth Koza

From: TILAK CHANDRA <tilak.chandra**At_Symbol_Here**WISC.EDU>
Subject: Re: [DCHAS-L] Grassroots lab safety examples?
Date: Tue, 10 Oct 2017 20:34:38 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: DM5PR06MB319519829B47A8B8CC27E0FD88750**At_Symbol_Here**DM5PR06MB3195.namprd06.prod.outlook.com
In-Reply-To <7CF7175D-5665-48F8-BDDC-2DE2ACC00633**At_Symbol_Here**keene.edu>


Replacement of hexanes with pentane for the column purification/chemical manipulations, hexanes is known neurotoxin.

The neurological effects of n-hexanes are well known since 1960 through occupational studies. n-Hexanes generates a specific metabolites called 2,5-hexanedionone, which is a peripheral neuropathy agent. However, pentane and other hexane isomers are not metabolized to 2,5-hexanedionone during metabolism. Therefore, pentane is not neurotoxic.

Please remember, I am not a toxicologist, and only toxicologist can interpret toxicological data.

Tilak

-----Original Message-----
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of Stuart, Ralph
Sent: Tuesday, October 10, 2017 2:50 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] Grassroots lab safety examples?

In a conversation with a colleague today, I was thinking of examples of lab situations in which lab workers "naturally" (i.e. without prompting from EHS offices) developed alternatives to the use of risky chemicals. Examples I came up with included the decrease of the routine use of benzene and Chromerge to wash glassware; and the development of nitric acid based microwave systems to replace boiling perchloric acid baths.

I wonder if there are other examples of such natural transitions that others on DCHAS-L can identify?

Thanks for any help with this.

- Ralph

Ralph Stuart, CIH, CCHO
Environmental Safety Manager
Keene State College
603 358-2859

ralph.stuart**At_Symbol_Here**keene.edu

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