kayshapero: (cat/hedgehog)
[personal profile] kayshapero
One for the books, if the book is Great Horror Tales of Chemistry anyway.  5 years old, but quite appropriate for the month which contains Halloween.

February 23, 2010

Things I Won't Work With: Dioxygen Difluoride

Posted by Derek

The latest addition to the long list of chemicals that I never hope to encounter takes us back to the wonderful world of fluorine chemistry. I'm always struck by how much work has taken place in that field, how long ago some of it was first done, and how many violently hideous compounds have been carefully studied. Here's how the experimental prep of today's fragrant breath of spring starts:

The heater was warmed to approximately 700C. The heater block glowed a dull red color, observable with room lights turned off. The ballast tank was filled to 300 torr with oxygen, and fluorine was added until the total pressure was 901 torr. . .

And yes, what happens next is just what you think happens: you run a mixture of oxygen and fluorine through a 700-degree-heating block. "Oh, no you don't," is the common reaction of most chemists to that proposal, ". . .not unless I'm at least a mile away, two miles if I'm downwind." This, folks, is the bracingly direct route to preparing dioxygen difluoride, often referred to in the literature by its evocative formula of FOOF.

(update - the blog it was in moved, so updated the link to the still quite interesting article...)

Date: 2015-10-03 08:06 am (UTC)
kjn: (Default)
From: [personal profile] kjn
A while back I found the following collection of stories about working with explosive compounds, mostly from the 19th century: http://www.logwell.com/tales/menu/index.html.

Date: 2015-10-03 09:17 am (UTC)
From: [identity profile] zanda-myrande.livejournal.com
A G Streng; obviously a Discworld alchemist in the making...

Date: 2015-10-03 12:57 pm (UTC)
seawasp: (Poisonous&Venomous)
From: [personal profile] seawasp
I love Things I Won't Work With. I was first introduced to it through the entry for Chlorine Trifluoride ( "Sand Won't Save You Now")

Date: 2015-10-03 05:44 pm (UTC)
kengr: (Default)
From: [personal profile] kengr
The current week of Skin Horse has them in a bit of a Mad Scientist lair. And one of said scientists is running around with a gun that sprays fluorine. The fluorine being carried in a clear tank on top of the weapon, The weapon looks *way* too much like a Super Soaker!

Date: 2015-10-04 12:05 am (UTC)
ext_5457: (Default)
From: [identity profile] xinef.livejournal.com
Yikes. Nor a bit of chemistry I'd like to do. Etching ceramic with HF isn't much fun either, by the way.
Edited Date: 2015-10-04 12:05 am (UTC)

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