From: "Lockwood, Sheila" <lockwoos**At_Symbol_Here**SEATTLEU.EDU>
Subject: Re: [DCHAS-L] LD50 Source Data
Date: Fri, 18 Oct 2019 17:23:17 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: MWHPR04MB0209063FE9D6868C68A2D0B8A46C0**At_Symbol_Here**

Hi Nora,

Do you have access to the Registry of Toxic Effects of Chemical Substances (RTECS)?

I purchase an annual subscription through the Canadian Center for Occupational, Safety and Health (CCOSH) Academic Support Program.  The subscription allows access five occupation safety databases.


Attached are two links for the items you were looking for.  Let me know if you have difficulty accessing the information.


Kind Regards,

Sheila Lockwood

Seattle University




RTECS Number PA8050000

RTECS Number UY5790000

From: ACS Division of Chemical Health and Safety <DCHAS-L@PRINCETON.EDU> On Behalf Of Nora Dunkel
Sent: Thursday, October 17, 2019 2:06 PM
Subject: [DCHAS-L] LD50 Source Data


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?




Nora Dunkel

Chemical Safety Officer

Webster University

314 246 2244

661 348 1445


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