Date: Fri, 8 Oct 2010 15:40:17 -0700
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Jamie Smith <jsmith107**At_Symbol_Here**IVC.EDU>
Subject: Re: Science Education & Safety
Comments: cc: Djian-Luke Ty
In-Reply-To: <00c301cb6722$23f07020$6bd15060$**At_Symbol_Here**vernon**At_Symbol_Here**>


Thank you!  We’ve been discussing discontin uing dichloromethane at our community college.  We’ve had some succes s using petroleum ether for chromatography, but are unsure what to use as a substit ute for the bromine in dichloromethane test for unsaturation.  We have the students use the Baeyer Test but would also like to do a bromine test, if possible.

Suggestions from the DCHAS community would be greatly appreciated.

Jamie Smith

Sr. Laboratory Technician

Irvin e Valley College

5500 Irvine Center Drive

Irvin e, CA  92620


From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**] On Behalf Of Russell Vernon
Sent: Friday, October 08, 20 10 12:51 PM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Science Education & Safety

I found out today that one of our teaching labs is conducted an extraction experiment with dichloromethane (caffeine from coffee)

I would like to provide them a reasonable alternative extraction experiment w ith an occupationally regulated carcinogen…

If you have a recommendation to look at, would you please contact me?



Russell Vernon, P h.D.

Research Safety< /font>

Environmental Health & Safety

University of California, Riverside

900 University Ave

Riverside, C A 92521


Direct (951) 827-5119

Admin (951) 827-5528

Fax (951) 827-5122

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