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March 20th, 2010 - Open Knowledge — LiveJournal

Mar. 20th, 2010

10:23 am - Things I Won't Work With: Dioxygen Difluoride. In the Pipeline:

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.

via pipeline.corante.com

Via Ian Erickson.

Posted via web from crasch's posterous

11:58 am - Emergence

via sayakaganz.com

By Sayaka Gantz

Posted via web from crasch's posterous

12:53 pm - Happy Birthday, Theresa!

via flickr.com

Posted via web from crasch's posterous

02:02 pm - Dr. Sketchy's Anti-Art School Trailer

via youtube.com

Posted via web from crasch's posterous

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