Date: Thu, 1 Dec 2011 11:55:19 -0500
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From: "Samuella B. Sigmann" <sigmannsb**At_Symbol_Here**APPSTATE.EDU>
Subject: Re: Glove chart that lists sodium azide?
X-cc: kauletta**At_Symbol_Here**NOTES.CC.SUNYSB.EDU
In-Reply-To: <OF112D6D3B.C9284726-ON85257959.00437397-85257959.0043E0D7**At_Symbol_Here**>

Hi Kim - I now have some additional info on the use which I did not have at the time of the original posting.  This is used as an antimicobial in a phosphate buffer from Megazymes.  I am hoping that it is in the kit they ordered already in the solution at very low concentrations and that the student will not have to prepare the buffer.  If the buffer does have to be prepared in house, I am going to try and convince them to make it fresh every day or week for the analysis rather than preserving it.

Thanks for all the info everyone!

On 12/1/2011 7:21 AM, kauletta**At_Symbol_Here**NOTES.CC.SUNYSB.EDU wrote:

Sammye - I don't think I saw you mention how much sodium azide was being handled and for how long. It will certainly make a difference in glove selection. I'd have a hard time convincing anyone that the risk of sodium azide in the lab (an occasional measuring of very small quantity) would require the silver shield & over glove versus doubling a pair of nitrile & removing them immediately. If they're working in manufacturing and handling large quantities for 6-8 hour shifts - no doubt about the extra protection. This is the same problem with trying to use industrial standards in the lab. PSM is great but won't apply to the labs, but I can certainly use some of the concepts.

Kim Auletta
Lab Safety Specialist
EH&S    Z=6200
Stony Brook University
FAX: 631-632-9683
EH&S Web site:

Remember to wash your hands!

From:        Harry Elston <helston**At_Symbol_Here**FGI.NET>
To:        DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Date:        12/01/2011 07:16 AM
Subject:        Re: [DCHAS-L] Glove chart that lists sodium azide?
Sent by:        DCHAS-L Discussion List <dchas-l**At_Symbol_Here**MED.CORNELL.EDU>

Not a flaw at all, Monona.  It is simply a statement of economic fact:  All gloves cannot be tested against all chemicals or all possible solvent/solute permutations unless one has an infinite amount of time, talent and treasure to do such testing.
If a user is all that curious, they can, of course, submit a glove sample and challenge agent to an ASTM testing facility and pay for the test themselves.
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of ACTSNYC**At_Symbol_Here**CS.COM
Thursday, December 01, 2011 5:15 AM
Re: [DCHAS-L] Glove chart that lists sodium azide?

All of this points up a flaw in the ASTM standard test for gloves.  It only provides for testing of chemicals that are liquids at room temperature and pressure, not for solids or solids dissolved in a liquid.  The exception are common chemicals that are actually gases dissolved in water like hydrochloric acid or ammonia solutions.  I've never seen a substance on any glove chart that was a solid dissolved in water.  So I think you are on your own as far as I know.  


In a message dated 11/30/2011 8:04:33 PM Eastern Standard Time,
llopez**At_Symbol_Here**EXCHANGE.FULLERTON.EDU writes:

From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Samuella B. Sigmann
Tuesday, November 29, 2011 8:14 PM
[DCHAS-L] Glove chart that lists sodium azide?

Does anyone have a chart that lists the permeation times for sodium azide?  


The Washington Post's Style Invitational asked readers to take any word from the dictionary, alter it by adding, subtracting, or changing one letter, and supply a new definition


Don’t always believe what you think.

Samuella B. Sigmann, NRCC-CHO

Lecturer/Safety Committee Chair

A. R. Smith Department of Chemistry

Appalachian State University

525 Rivers Street

Boone, NC   28608

Phone: 828 262 2755

Fax: 828 262 6558

Email: sigmannsb**At_Symbol_Here**


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