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Subject: Re: DCHAS-L Digest - 9 Jul 2005 to 10 Jul 2005 (#2005-80)
Date: Mon, 11 Jul 2005 18:25:40 +0530
Author: Bhujle Vijay CE IN 		Next by Date:
Subject: Re: Fwd: recent lab explosion
Date: Mon, 11 Jul 2005 13:23:07 -0400
Author: David Siegel

(Note: This post is 20 years old and may contain outdated information.)


Date: Mon, 11 Jul 2005 09:29:01 EDT
Reply-To: DanielD734**At_Symbol_Here**AOL.COM
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: DanielD734**At_Symbol_Here**AOL.COM
Subject: Re: H2 pressure vs HF pressure
Comments: To: mclark**At_Symbol_Here**LOCUSPHARMA.COM

According to the Gas Data Book, Sixth Edition, from Matheson:

Anhydrous HF boils at 19.5 deg C. It is shipped in cylinders under its own
vapor pressure of 0.3 psi at 20 deg C.

Hydrogen boils at -252.8 deg C.

Assume the dimensions of a lecture bottle are 5 cm x 30 cm. This gives a
volume of 0.589 liter. Assume one mole of hydrogen is formed in the lecture
bottle. Plug these numbers into the ideal gas equation at 20 deg C.

PV = nRT

P = 40.8  atm or 600 psi

That's a huge increase in pressure!!!!

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