Date: Mon, 6 Apr 2009 16:53:28 -0700
Reply-To: Eric Clark <erclark**At_Symbol_Here**PH.LACOUNTY.GOV>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Eric Clark <erclark**At_Symbol_Here**PH.LACOUNTY.GOV>
Subject: Re: Sodium Azide
Comments: To: Carole Savoie
In-Reply-To: <007401c9b705$52bd31a0$f83794e0$**At_Symbol_Here**savoie**At_Symbol_Here**>

Many municipalities don't want azides going down the drain. If that's how it is in Montreal, you'll have to make a decision on how you want to handle the wastes. - For small amounts, you could absorb the liquid remnants in vermiculite or another absorbent material and put it in the regular trash (it's non-RCRA waste in the US). - If this is an ongoing process and you're expecting a regular waste-stream, it might be cost-effective to destroy the azides with nitrous acid and then let it go down the drain. Here's the recipe for that: Eric Clark, MS, CCHO, CHMM Safety Officer Los Angeles County Public Health Lab >>> Carole Savoie 4/6/2009 3:16 PM >>> Good day everyone, One of our researcher suddenly wants to use sodium azide in a chemical reaction. I’m aware of the risks associated with that chemical, but never used it as a chemist. If you have any “Thing to do or not do” experience or knowledge to share with us, we are very interested in reading them. I read in the MSDS that the evacuation equipment had to be explosion-proof. I can understand why, but is it the case in your institutions? Thanking you in advance for your responses! Carole _________________________________________ Carole Savoie, Ph.D. Chemistry OHS Senior Consultant Radiation Safety Officer OHS Sector École Polytechnique C.P. 6079, succ. Centre-ville Montréal, Québec Canada, H3C 3A7 Tél: (514) 340-4711, poste 4547 Fax: (514) 340-4333 Carole.Savoie**At_Symbol_Here** Avez-vous réellement besoin d'imprimer ce courriel? Protégeons notre environnement! MISE EN GARDE CONCERNANT LA CONFIDENTIALITÉ Ce courriel, ainsi que ses pièces jointes, contient de l'information de l’École Polytechnique, qui peut être de nature confidentielle, et est réservé exclusivement à l'usage personnel et confidentiel du destinataire indiqué ci-dessus. Si ce message ne vous est pas adressé et que vous n'êtes ni un employé ni un mandataire chargé de le remettre au destinataire, nous vous avisons par les présentes que vous avez reçu ce document par erreur et qu'il est strictement interdit de le réviser, de le diffuser, de le distribuer ou d'en faire une copie. Si vous avez reçu cette communication par erreur, veuillez nous en aviser immédiatement par courriel et supprimer le message original.

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