[labnetwork] C5F8 Usage and handling

[Schwartz, Kenneth F]

Dan,
   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.
   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

Kenny Schwartz
Birck Nanotechnology Center
Purdue University
PH 765-496-1174
kfschwar at purdue.edu

From: labnetwork-bounces at mtl.mit.edu [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Dan Woodie
Sent: Wednesday, January 05, 2011 1:43 PM
To: labnetwork at mtl.mit.edu
Subject: [labnetwork] C5F8 Usage and handling

Hello from the white north,

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:

Difluoromethane (CH2F2)
Hexafluorobutadiene (C4F6)
Octofluorocyclopentene (C5F8)

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.

Dan

Dan Woodie
Lab Use Manager
Cornell NanoScale Facility
250 Duffield Hall
Ithaca, NY 14853-2700
(607)254-4891



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