tag:blogger.com,1999:blog-8964719845369935777.post5266890294876381559..comments2024-03-27T21:23:40.339-04:00Comments on Chemjobber: A report from Bristol on that TATP incidentChemjobberhttp://www.blogger.com/profile/15932113680515602275noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-8964719845369935777.post-74460329971041061372017-02-16T12:35:56.469-05:002017-02-16T12:35:56.469-05:00"Finally, it would be great if there was some..."Finally, it would be great if there was some kind of central repository of chemical incident information."<br /><br />Seems like this would be a valid thing for the ACS to do as part of its mission. Maybe some of the C-suite execs could lead the charge.Hoppenheimernoreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-75091999809808058802017-02-16T11:56:32.696-05:002017-02-16T11:56:32.696-05:00A useful repository for information: I think no lo...A useful repository for information: I think no longer updated but has some good knowledge for process chemists.<br />http://www.crhf.org.uk/index.html<br /><br />Sajnoreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-69311108346568361062017-02-15T17:54:27.466-05:002017-02-15T17:54:27.466-05:00again, the reaction of the student, boss, the univ...again, the reaction of the student, boss, the university was completely overblown and unnecessary, given the amounts of materials, but I guess everyone wanted to handle this by the book. Diluting the react mix with alcohol and pouring it down the drain with running water would be appropriate. I would not do this with 10 liters of potentially hazardous mixture, but 100mL of mix is kind of a joke - adding half a liter of methanol would be enough to render it innocuous. <br /><br />The yellow color in chlorite oxidation is most likely ClO2 from a combination of acid and chlorite. Additives like sulfamic acid are good at removing Cl2 and ClO(-) but they do not do anything for ClO2. But chlorine dioxide is volatile, on gram scale rotovaping it is perfectly reasonable, only on kilo scale I would worry about hazards of ClO2. Also, acetonitrile is far better solvent for oxidations than acetone, I have used aqueous acetonitrile for chlorite oxidations and it worked very nicely.milkshakehttps://www.blogger.com/profile/08188961610554710616noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-57448274058067243852017-02-15T15:04:37.938-05:002017-02-15T15:04:37.938-05:00I assumed rotovapping - I thought they said that t...I assumed rotovapping - I thought they said that they were trying to pull off solvent but the mixture didn't seen to decrease in volume, but only to get more viscous; that was when they realized that something was wrong. <br /><br />This incident seems like one of those moments right up there with this: http://blogs.sciencemag.org/pipeline/archives/2007/03/01/how_not_to_do_it_tertiary_butyllithium I guess everyone's glad, though, that he didn't just leave it there and go to lunch.Hapnoreply@blogger.com