DCHAS-L Discussion List Archive
From: Brian & Erin Mueller <brierimueller**At_Symbol_Here**COMCAST.NET>
Subject: Re: [DCHAS-L] DMF "use within 5 years"
Date: Tue, 4 Aug 2015 16:43:54 +0000
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 149235330.32841235.1438706633192.JavaMail.zimbra**At_Symbol_Here**comcast.net
In-Reply-To
As I recall, DMF is pretty hydroscopic. A quick web search yielded: "DMF is stable. It is hygroscopic and easily absorbs water form a humid atmosphere and should therefore be kept under dry nitrogen." Perhaps that is why they put an expiration date, after opening.
Brian Mueller
Lab EHS Consultant
303-819-8422
From: "Margaret Rakas" <mrakas**At_Symbol_Here**SMITH.EDU>
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Sent: Tuesday, August 4, 2015 9:30:03 AM
Subject: Re: [DCHAS-L] DMF "use within 5 years"
If it's 'molecular biology grade'--whatever that is--sometimes they have use-by dates for reagents with this labeling. I've had buffered phenol and even ethanol that have been unopened but the molbio people see the 'expiration' date and hazwaste it....
good luck and let us know (you could also call Acros)--
Margaret
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