On Aug 3, 2022, at 16:33, Jonathan Klane <jklane1**At_Symbol_Here**asu.edu> wrote:
I think that Debbie's question was about the meaning or definition intended by "explosion-proof hood".Does it mean rated as class 1 division 1 as she suggests?Or is it a less formal meaning that the hood structure won't give way, or will blow out vertically, or another similar meaning that isn't class 1, div 1.Of course, I could be wrong. As I like to remind myself and others, "I've been wrong before, I'll be wrong again. I just happen to think I'm right this time." ;-)I hope this helps.All my best,JonJonathan Klane, M.S.Ed., CIH, CSP, CHMM, CITSenior Safety Editor, Lab Manager MagazinePhD candidate, Human + Social Dimensions of Science + TechnologyCollege of Global FuturesSchool for the Future of Innovation in Society--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchasOn Wed, Aug 3, 2022 at 2:11 PM John Callen <jbcallen**At_Symbol_Here**gmail.com> wrote:--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchasDebbie,My comment was based from the reactivity of iron pentacarbonyl as a flammable liquid, etc.Please look at the warnings, especially "Prevention" in the attached link.When I was in graduate research, I always took a very cautious and measured approach when I was working with or around others who were working with boranes, carbonyls and other pyrophorics, explosive & shock sensitive, etc. chemicals. That why I stated the use of an explosion-proof laboratory hood.All My Best,JohnOn Aug 3, 2022, at 15:01, Debbie Decker <debbie.m.decker**At_Symbol_Here**gmail.com> wrote:John Callen writes "...the meantime, Iron pentacarbonyl, as you know, is nasty stuff and should be used with extreme caution in an explosion-proof laboratory hood."--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchasI'm wondering what you meant by the phrase "explosion-proof laboratory hood." This brings to mind for me Class 1, Division 1 electrical utilities to the hood, installed in a space with a similarly protected electrical system.Is that your intent?Debbie
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