Date: Fri, 5 Sep 2003 09:55:16 -0500
Reply-To: "Shields, Jefry (JE)" <JEShields**At_Symbol_Here**DOW.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Shields, Jefry (JE)" <JEShields**At_Symbol_Here**DOW.COM>
Subject: Re: Sodium azide solutions
Comments: To: "Ralph Stuart, University of Vermont"

Along these same lines...

Does anyone know about the use of thimerosal for the same reasons at similar concentrations?

Thanks in advance.

-----Original Message-----
From: Ralph Stuart, University of Vermont [mailto:rstuart**At_Symbol_Here**UVM.EDU]
Sent: Friday, September 05, 2003 7:46 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Sodium azide solutions

Has anyone tried to define the line between a "non-hazardous" and
"hazardous" solution of sodium azide? The Laboratory Chemical Safety
Summary in Prudent Practices seems to address only the solid form.

We have many people using it at millimolar levels to control
biological activity in nutrient solutions. I don't believe that this
use presents a toxicity hazard for chemical hygiene plan purposes.
However, the natural question is "Is it only the solid form of sodium
azide that is potentially toxic, either acutely or chronically?" "At
what concentration would the toxicity concern become neglible?"

Thanks for any insight on this.

- Ralph

Ralph Stuart, CIH
Environmental Safety Manager
University of Vermont
Environmental Safety Facility
667 Spear St.
Burlington, VT   05405

fax: (802)656-5407

SAFETY list (general discussion of environmental health and safety)
LAB-XL list (performance oriented environmental regulation of laboratories)

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