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Subject: Re: [DCHAS-L] Is lead sheeting a source of lead dust? And-Chemical Exposure question...
Date: Friday, July 26, 2019 at 1:12:05 PM
Author: "Hadden, Susan [JRDUS]" <00000870f3fddfce-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> 		Next by Date:
Subject: Re: [DCHAS-L] Is lead sheeting a source of lead dust? And-Chemical Exposure question...
Date: Fri, 26 Jul 2019 13:27:23 -0400
Author: Eugene Ngai

From: Alan Hall <oldeddoc**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] Is lead sheeting a source of lead dust? And-Chemical Exposure question...
Date: Fri, 26 Jul 2019 12:13:51 -0500
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: CALDugabgOVY6SGSN+x0BN3KgxkTTQaFTYxSFbY5U3JhTc+vs4g**At_Symbol_Here**mail.gmail.com
In-Reply-To


I would doubt that lead sheets would present a significant hazard. Certainly, they should be disposed of properly. Why were the there in the first place? Shielding for radiation?

Certainly there are water reactive chemicals (metallic sodium, potassium and others come to mind).

SDSs are archaic at best with the same boiler plate used throughout. Better to utilize Toxnet from the National Library of Medicine (http://www.nlm.nih.gov).

Alan
Alan H. Hall, M.D.
Medical Toxicologist



On Fri, Jul 26, 2019 at 11:54 AM Margaret Rakas <mrakas**At_Symbol_Here**smith.edu> wrote:
So...two questions for Friday...

1) If you found a large stack of lead sheets...sitting in a storage area for some time (who knows how long!?)...would you be concerned about lead dust in the immediate area, say the surrounding floor? I understand that grinding, sanding, filing, etc creates lead dust but this situation doesn't fit any of those...I cannot find any references so in case I'm imagining that just because it's soft, dust forms over time....I wanted to check...

2) A student asked me if there were any chemicals for which you would NOT want to use water in case of chemical exposure. I did a quick search and the Canadian CCOHS (their OSHA) advises "...Note that the manufacturer/supplier .. may recommend an alternative agent in exceptional cases if water is clearly inappropriate." I have read plenty of SDS's in my time but have never seen an SDS state anything other than using water as the first step. Has anyone ever encountered any other initial instructions for dermal or eye exposure? (Of course there may be additional steps AFTER water flushing, like use of calcium gluconate gel, etc)...

MANY THANKS and happy Friday to all!
Margaret


--
Margaret A. Rakas, Ph.D.
Lab Safety & Compliance Director
Clark Science Center
413-585-3877 (p)

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