I have to agree with Debbie. The best people to contact are those who are handling the materials. Doing some research and comparison with other toxic chemicals and personal usage, the following may be used (with disclaimer): PVC, Neoprene, and Latex Rubber. Note: as researchers, it is very important for us to realize that gloves are not designed for applications involving prolonged, direct exposure to chemicals. For most processes, it is expected that thin gauge disposable gloves will protect from incidental contact only. Total or partial immersion of fingers or hands is not advised or anticipated. Permeation data predicts for the gloves mentioned above is less than one hour for chromic acid (toxic) and will protect from incidental contact where there is NO total or partial immersion. I assume the same guidelines can be applied for methaneseleninic acid (toxic). The contaminated glove(s) should be removed immediately if they come into contact with liquid. The bottom line is that nothing more important than personal hygiene and vigilance. If we are not careful, nothing can be good enough to protect us from exposure. Gloves MUST be changed frequently to prevent exposure from the unfriendly absorbed chemicals. Also, we need to inspect regularly for leaks and cracks. Good luck. __________________________________________________ Mikhail Alnajjar, PhD Senior Research Scientist Chemical Hygiene Officer -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of List Moderator Sent: Thursday, July 02, 2009 5:04 AM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: [DCHAS-L] 2 RE: [DCHAS-L] Methaneseleninic acid gloves? >We had a question about the correct gloves to wear when working with Methaneseleninic acid. The Sigma/Aldrich MSDS helpfully says "Handle with gloves", but given the stench and high toxicity of the material, the researcher (and we) would like something more specific. The process is weighing out and dissolving the powder in water. From: "Margaret Rakas"
Date: June 30, 2009 10:47:25 AM EDT Subject: Re: [DCHAS-L] Methaneseleninic acid gloves? My suggestion is to call Sigma Aldrich and ask them what their folks wear when they handle this stuff. After all, they either make it or repackage it (or can ask their vendor what they use). Be pushy if you need to be; I have had some very inexperienced "safety specialists" who basically read the MSDS and some very good ones. The other alternative is to call one of the glove manufacturers, who have always been able to help me with these questions if the original vendor can't. But SA is a big company and should be providing this information as a matter of 'product stewardship'. If more people 'bothered' them for this information they would rightly start adding it to the MSDS, where it belongs. Good luck. The above is my personal opinion only, not legal advice and may not reflect the opinion of my employer or any group to which I belong. Margaret Rakas === From: "Debbie M. Decker" Date: June 30, 2009 11:46:46 AM EDT Subject: RE: [DCHAS-L] Methaneseleninic acid gloves? When I don't know what gloves to recommend (and the manufacturer is no help), my fall back is Silver Shield with close-fitting nitrile over top. Good luck!
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