Date: Wed, 8 Apr 2009 01:09:56 +0800
Reply-To: Jimmy Kwok <jimmykwok**At_Symbol_Here**RAM-CHEM.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Jimmy Kwok <jimmykwok**At_Symbol_Here**RAM-CHEM.COM>
Subject: Re: Sodium Azide
Comments: To: "Dr. Jay A. Young"
In-Reply-To: <369E7ED48CB641CB8AF2225EF63BF949**At_Symbol_Here**chemical6df00a>

Carole ,

Hi , I am a chemist in the industrial for more than 33 years , I shared my experiences with followings to your requests

The explosion proof equipment said to be used as the chemical by nature with low flash point , it will have vapor of the chemical itself or the solvent for the chemical in danger with the open fire or the sparks created from electric on/off switching .

If you do not have the open fires within 25 meter from your location  while the chemical is at uncapped or handling in open air . No electronics appliances is in lives and operating within 25 meter apart from the distance at uses of the chemical as well .

The ventilation system is the protections to the users at handling operations as chemical specified as hazards to users , if there is not a low flash point solvent , or it is just the corrosives , then it is not required for the explosion proof .

It is very commonly noticed the  explosion proof is always requested at the ventilation system for any low flash point solvent .

I hoped the above information could be your helps .

Jimmy Kwok

From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of Dr. Jay A. Young
Sent: Tuesday, April 07, 2009 11:28 PM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: Re: [DCHAS-L] Sodium Azide



The purpose of an MSDS is that it be read and that the hazards and precautions be understood as correct.




If others reply to your inquiry indicating that they ignore such information in an MSDS, you can be CERTAIN that sooner or later they will not be able to answer any email inquiries until they re-build their facilities that were destroyed in an explosion.


Jay Young


----- Original Message -----

From:< /b> Carole Savoie

To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU

Sent: Monday, April 06, 2009 6:16 PM

Subject: [DCHAS-L] Sodium Azide

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 Savoie, Ph.D. Chemistry

OHS Senior Consultant

Radiation Safety Officer

OHS Sector

=C9cole Polytechnique

C.P. 6079, succ. Centre-ville

Montr=E9al, Qu=E9bec

Canada, H3C 3A7

T=E9l: (514) 340-4711, poste 4547

Fax: (514) 340-4333



Avez-vous r=E9ellement besoin d'imprimer ce courriel?  Prot=E9geons notre environnement!


Ce courriel, ainsi que ses pi=E8ces jointes, contient de l'information de l’=C9cole Polytechnique, qui peut =EAtre de nature confidentielle, et est r=E9serv=E9 exclusivement =E0 l'usage personnel et confidentiel du destinataire indiqu=E9 ci-dessus. Si ce message ne vous est pas adress=E9 et que vous n'=EAtes ni un employ=E9 ni un mandataire charg=E9 de le remettre au destinataire, nous vous avisons par les pr=E9sentes que vous avez re=E7u ce document par erreur et qu'il est strictement interdit de le r=E9viser, de le diffuser, de le distribuer ou d'en faire une copie. Si vous avez re=E7u cette communication par erreur, veuillez nous en aviser imm=E9diatement par courriel et supprimer le message original.

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