About This Archive  | DCHAS-L 2019 Index   | DCHAS-L Yearly Index
person wearing a disposable face shield and surgical style mask

Check out Safety Emporium for your N95, N99, and face shield needs.

Previous by Date:
Subject: Re: [DCHAS-L] Validity of the risk matrix
Date: Friday, October 18, 2019 at 11:58:26 AM
Author: Monique Wilhelm <mwilhelm**At_Symbol_Here**UMICH.EDU> 		Next by Date:
Subject: Re: [DCHAS-L] [External] Re: [DCHAS-L] Validity of the risk matrix
Date: Fri, 18 Oct 2019 17:02:23 +0000
Author: McGrath Edward J

From: Jim Stewart <jhstew36**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] LD50 Source Data
Date: Fri, 18 Oct 2019 12:39:44 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: CAFhSum=Jef49JXUjAax1KV6RCgarJ3MCLh0DabVa-rtnx8fVLQ**At_Symbol_Here**mail.gmail.com
In-Reply-To


RTECS: The Registry of Toxic Effects of Chemical Substances is a toxicology database is compiled, maintained by NIOSH is a great source.The link to the NIOSH site where RTECS is discussed is:

https://www.cdc.gov/niosh/rtecs/rtecsaccess.html

If you access RTECS there will be a charge because NIOSH has retailers working with them who actually provide access. If you want RTECS information for a specific compound/element I recommend the "NIOSH Pocket Guide" because there is an entry in the chemical's record containing a direct link to that particular RTECS record for that chemical and it is free when accessed in this manner. The link to the methylene chloride record in the "Pocket Guide" is:

https://www.cdc.gov/niosh/npg/npgd0414.html


There are other sources of values such as the LD50 like HSDB, DART and others available on TOXNET (free).


James H. Stewart, Ph.D., CIH, CSP

On Fri, Oct 18, 2019 at 10:18 AM Joseph Smith <information**At_Symbol_Here**canaverallaboratories.com> wrote:
ACGIH manual lists LD50.

On Fri, Oct 18, 2019 at 6:26 AM Nora Dunkel <noradunkel51**At_Symbol_Here**webster.edu> wrote:

Does anyone know where to find the studies/source data for LD50 values listed in SDSs? I'm specifically looking for studies/data on the reproductive/developmental hazards of methylene chloride and N-methyl-2-pyrrolidone (CAS # 872-50-4). Is there a database somewhere or does each manufacturer keep its source data in-house?

Thanks!

Nora Dunkel

Chemical Safety Officer

Webster University

314 246 2244

661 348 1445

--- 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**acsdchas


--
This email contains privileged and confidential information and is the sole property of the sender. If you are not the intended recipient of this email and accompanying attachments, please return to sender and immediately delete this and all other copies you may have created.
--- 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**acsdchas
--- 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**acsdchas

Previous post   |  Top of Page   |   Next post


The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.