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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><b><i><span style='font-size:14.0pt;font-family:"Calibri","sans-serif"'>Dan,<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='font-size:14.0pt;font-family:"Calibri","sans-serif"'> I am responsible for all process gases here at the Birck Nanotechnology Center at Purdue University and I have also worked in the private sector for 15 years with process gases.<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='font-size:14.0pt;font-family:"Calibri","sans-serif"'> I would recommend placing all 3 in gas cabinets from a safety point of view .Please feel free to contact me if I can be of any assistance<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='font-size:14.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></i></b></p><div><p class=MsoNormal><span style='font-family:"Arial Black","sans-serif"'>Kenny Schwartz</span><span style='font-size:10.0pt;font-family:"Arial Black","sans-serif"'><br>Birck Nanotechnology Center<br>Purdue University<br>PH 765-496-1174<br>kfschwar@purdue.edu </span><span style='font-family:"Arial Black","sans-serif"'><o:p></o:p></span></p></div><p class=MsoNormal><b><i><span style='font-size:14.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></i></b></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu] <b>On Behalf Of </b>Dan Woodie<br><b>Sent:</b> Wednesday, January 05, 2011 1:43 PM<br><b>To:</b> labnetwork@mtl.mit.edu<br><b>Subject:</b> [labnetwork] C5F8 Usage and handling<o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Hello from the white north,<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>We are working on adding several of the more unusual fluorocarbon gases to our Oxford 100 tool and we are having a hard time getting clear information on proper handling and storage of some of the gases. Specifically we are looking at adding:<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Difluoromethane (CH2F2)<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Hexafluorobutadiene (C4F6)<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Octofluorocyclopentene (C5F8)<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Unlike the more common fluorocarbons such as CHF3, CF4, C4F8, these are all flammable, and the last two are also listed as toxic. MSDS information on them is also light as they are fairly new materials and most do not have TLV values set yet. Some sources are indicating that the C5F8 does not need to be in a gas cabinet, but a review of the MSDS makes me hesitant to follow that. Is anyone else using this material and if so, how do you handle it? Thanks in advance for your collective wisdom.<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Dan<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Dan Woodie<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Lab Use Manager<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Cornell NanoScale Facility<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>250 Duffield Hall<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Ithaca, NY 14853-2700<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>(607)254-4891<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div></div></body></html>