From:
William H Breazeale <breazealew**At_Symbol_Here**GMAIL.COM>
Subject:
Re: [DCHAS-L] Filling balloons with hydrogen gas
Date:
Jul 13, 2023 16:59 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<CAEXVVwP14aPRvm2-PKz3_KrSN2Ho=YOOXavhZcXy7=CvXxD5TQ**At_Symbol_Here**mail.gmail.com>
In-Reply-To:
<SA0PR04MB74493A8B80B7696B1092EC32BA36A**At_Symbol_Here**SA0PR04MB7449.namprd04.prod.outlook.com>
All:
I have not been fully following this discussion. This item may have already been discussed. Many balloon constriction materials when inflated may develop pore sizes that allow the passage of molecules, especially H2 and He. Someone inflating these balloons may find them, after a period of time, partially deflated and on the floor. This happened to me many years ago as a teenager.
Jack Breazeale
I’d just buy a lecture-size bottle of H2 and be done with it.
Chemical Engineering Safety Coordinator
Ralph E. Martin, Department of Chemical Engineering
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of Laura Cunningham
Sent: Thursday, July 6, 2023 2:28 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Filling balloons with hydrogen gas
Does anyone have recommendations on how to *safely* fill a balloon with hydrogen? The hydrogen tank in this scenario is in an open lab, and the hydrogen filled balloon is for a hydrogenation reaction. The gas tank is located close enough
to a fume hood that piping the hydrogen into the fume hood might be feasible. Wondering what other people’s experiences have been with this.
Laura
Sent from Proton Mail for iOS
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at
membership**At_Symbol_Here**dchas.org
---
For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at
membership**At_Symbol_Here**dchas.org
-- W. H. "Jack" Breazeale
715 High Battery Circle, Mount Pleasant, SC 29464
Emeritus Professor of Chemistry, Francis Marion University
Fellow of the American Chemical Society
Home: 843-884-6939
Cell: 843-830-2714
---
For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at
membership**At_Symbol_Here**dchas.org
