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Demystify: 

Date: Mon, 11 Jul 2005 08:10:51 -0400
Reply-To: Matthew Clark <mclark**At_Symbol_Here**LOCUSPHARMA.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Matthew Clark <mclark**At_Symbol_Here**LOCUSPHARMA.COM>
Subject: Re: DCHAS-L Digest - 9 Jul 2005 to 10 Jul 2005 (#2005-80)
Comments: To: Labsafe**At_Symbol_Here**AOL.COM
In-Reply-To: <1a7.3ab7f86a.3003b0af**At_Symbol_Here**aol.com>

text/plain

check the triple points of HF and H2; HF will liquify easily, H2 will
not and therefore the pressure can increase.

On Mon, 2005-07-11 at 07:23 -0400, Jim Kaufman wrote:
> In a message dated 7/11/2005 12:02:39 AM Eastern Daylight Time,
> LISTSERV**At_Symbol_Here**LIST.UVM.EDU writes:
>
> > 6HF + 2Fe yields 2FeF3 + 3H2
>
> 2HF + Fe = FeF2 + H2
>
> It does not matter whether it forms FeF3 or FeF2.  In either case there will
> be fewer gas molecules in the cylinder and the pressure will go down and not
> up.
>
> Therefore, I agree with Jay (although it pains me to no extent ), that
> the tank ruptured because of the wall thinning.
>
> James A. Kaufman, Ph.D.
> President/CEO
> jimkaufman**At_Symbol_Here**labsafety.org
>
> The Laboratory Safety Institute
> A Nonprofit International Organization for
> Safety in Science and Science Education
>
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