Date: Tue, 2 Nov 2010 15:30:22 -0400
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
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From: ILPI <info**At_Symbol_Here**ILPI.COM>
Subject: Re: Peroxide-forming Chemicals
In-Reply-To: <5FACB4409D5F454B8AE2D500BB363EA68A05AE49E7**At_Symbol_Here**>

As discussed on my peroxide web page under "Special Precautions To Take With Peroxide-Forming Materials", I would test open peroxide formers on a regular schedule, such as the first day of each month.   You need to make it some kind of routine that is easy to remember.   If you use some sort of calendaring software, such as Apple's iCal, it is easy to set reminders for such tasks....which reminds me, time to make my federal tax payments ;-( ds/ref/peroxide.html

For unopened materials, I'd probably give them up to 3-6 months based on the relative risk, at which point you have to open the unopened container for testing.   And then it's every month for that container because it was opened.

Also mentioned on my page is a new product called Xpell by Xplosafe, which is a color-indicating pellet which obviates the need for test strips.  Of course, you have to store the material in a clear bottle to take full advantage of that.


Rob Toreki

Safety Emporium - Lab & Safety Supplies featuring brand names
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On Nov 2, 2010, at 2:17 PM, Halim A. Hasan wrote:

=46rom a chemists perspective (which I am not), is there a rule of thumb on how long a chemical that has the potential to form peroxides should be kept once opened? Unopened? I will be reviewing regs for additional information, but I am looking for chemists (or others with experience) point of view. Thanks in advance.
Halim A. Hasan, CHMM 
Environmental Health & Safety Officer 
Radiation Safety Officer 
Lundbeck Research USA 
201.350.0119 Office 
201.315.4842 Mobile

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