From: "Demer, Frank R - (demer)" <demer**At_Symbol_Here**EMAIL.ARIZONA.EDU>
Subject: Re: [DCHAS-L] Nitric oxide and nitrogen dioxide cylinders
Date: Wed, 25 Feb 2015 20:53:17 +0000
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 4A14EEF4B27C1A458D48A52027ED87F476CC5A8B**At_Symbol_Here**

AirLiquide provide the following advice on 9-16-08:


“Nitric Oxide – no certified shelf life for high purity materials, NO starts to degrade soon after it is filled into the cylinder.  Lower grade material may be certified with a shelf-life.  This is costly, though, as the cylinder is filled with high purity material and allowed to degrade over time.  The actual shelf life is dictated by the guaranteed purity specification and is negotiated at the time of purchase.”


“Nitrogen dioxide – this is a material that is not typically available.  I believe small quantities have been sold in lecture bottles with no shelf life guarantee.”


From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Kohler, Christopher E
Sent: Wednesday, February 25, 2015 1:43 PM
Subject: [DCHAS-L] Nitric oxide and nitrogen dioxide cylinders


Greetings listers,


Has anyone ever heard of a limited shelf-life for cylinders of nitrogen dioxide or nitric oxide?


Both are toxic oxidizers..


Many thanks,




Christopher E. Kohler

Laboratory Safety Manager

University Environmental Health and Safety

Indiana University

1514 E Third Street

Bloomington, IN 47405

(812) 855-5454



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
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.