DCHAS-L Discussion List Archive
From: DAVID Katz <DAKATZ45**At_Symbol_Here**MSN.COM>
Subject: Re: [DCHAS-L] "Hydrogen pop" demo and PPE
Date: Tue, 29 Dec 2020 17:51:09 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: BL0PR05MB5346C531D9C983A7CDC15CD8C5D80**At_Symbol_Here**BL0PR05MB5346.namprd05.prod.outlook.com
In-Reply-To
Hi Jyllian,
I recommend using an ignition tube (a heavy wall rimless test tube) for this experiment as it can take the impact of a small explosion. Test tubes with rims may have small chips that compromise their integrity. A test tube clamp should be used to hold
the test tube. The reaction should be far away from the experimenter's face.
I always do this with a candle, or other flame, located on a bench or table top and move the inverted test tube to the flame. That way the reaction is not near my face.
I did take a photograph of the hydrogen flame in a test tube. If you are interested, please email me.
Best regards,
David
_________________________________________________________________________
David A. Katz
Chemist, Educator, Expert Demonstrator, Science Communicator, and Consultant
Programs and workshops for teachers, schools, museums, and the public
5003 Canby Dr. * Wilmington, DE 19808-1102 * USA
cell: (520) 465-5028 * email:
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_________________________________________________________________________
----- Original Message -----
Sent: Tuesday, December 29, 2020 12:05 PM
Subject: [DCHAS-L] "Hydrogen pop" demo and PPE
Hi all--I'd appreciate any thoughts on someone wearing just eye protection for this demo. On the one hand, it's a small amount and the test tubes don't have constricted necks. On the other hand, it looks like a glass tube held in bare hands
near the face.
https://twitter.com/I_am_Endeavour/status/1340788101283803140
It's been suggested as something to post in C&EN's
"Chemistry in Pictures" collection for New Year's Eve, and I need to decide by tomorrow (Wednesday 12/30) whether to go ahead.
Thanks for your input!
Jyllian
Jyllian Kemsley, PhD [she/her/hers]
Executive Editor, policy and content partnerships
Chemical & Engineering News
M: (+1) 925-519-6681 | Skype: jyllian.kemsley
Twitter: **At_Symbol_Here**jkemsley
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