About This Archive  | DCHAS-L 2015 Index   | DCHAS-L Yearly Index
person wearing a disposable face shield and surgical style mask

Check out Safety Emporium for your N95, N99, and face shield needs.

Previous by Date:
Subject: Re: [DCHAS-L] Fume Hoods
Date: Tuesday, August 4, 2015 11:40:52 AM
Author: Ray Ryan <RRyan**At_Symbol_Here**FLOWSCIENCES.COM> 		Next by Date:
Subject: Re: [DCHAS-L] Fume Hoods
Date: Tue, 4 Aug 2015 15:51:19 +0000
Author: Debbie M. Decker

From: "Sumliner, Jordan" <j.m.sumliner**At_Symbol_Here**EMORY.EDU>
Subject: Re: [DCHAS-L] DMF "use within 5 years"
Date: Tue, 4 Aug 2015 15:43:03 +0000
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: BLUPR05MB721BD7596542C72E05ED235DC760**At_Symbol_Here**BLUPR05MB721.namprd05.prod.outlook.com
In-Reply-To <12A1D57E-5DA4-4B91-9B83-60B1ACAB3717**At_Symbol_Here**keene.edu>


If it is opened in air, I could only imagine that it would slowly hydrolyze to formic acid and dimethylamine if opened in air, which would form impurities. Perhaps that is why the manufacturer recommends it be disposed of. I do not think any reactive impurities form.

Jordan

Jordan M. Sumliner, MS
Environmental Health and Safety Professional II
Environmental Health and Safety Office
Emory University


-----Original Message-----
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**med.cornell.edu] On Behalf Of Stuart, Ralph
Sent: Tuesday, August 04, 2015 11:26 AM
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject: [DCHAS-L] DMF "use within 5 years"

During a lab inspection today, I noticed a bottle of extra pure Dimethylformamide in one of our labs that had a note on the manufacturers (Acros) label that says "use within 5 years of opening". A little Google searching doesn't seem to indicate the DMF is a peroxide former, so I wonder if anyone can shed some light on why this time limit is recommended?

The bottle was received in Jan 2011, so inquiring miles would like to know.

thanks for any insight on this.

- Ralph


Ralph Stuart CIH
Chemical Hygiene Officer
Keene State College
Keene, NH. 03431

ralph.stuart**At_Symbol_Here**keene.edu

________________________________

This e-mail message (including any attachments) is for the sole use of
the intended recipient(s) and may contain confidential and privileged
information. If the reader of this message is not the intended
recipient, you are hereby notified that any dissemination, distribution
or copying of this message (including any attachments) is strictly
prohibited.

If you have received this message in error, please contact
the sender by reply e-mail message and destroy all copies of the
original message (including attachments).

Previous post   |  Top of Page   |   Next post


The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.