[3dem] Uranyl Formate powder lifetime
rkhayat at ccny.cuny.edu
rkhayat at ccny.cuny.edu
Wed Nov 19 07:15:55 PST 2014
Hi Fabien,
I've stored 1%UF at -80dC for over a year without any
issues. If the solution becomes green, it's gone bad. A
1%UF solution at room temp for a couple of hours will go
bad. This is predominantly because of its light
sensitivity. A 1%UF solution at room temp in the dark does
not turn green even after 8 hours, but that doesn't mean it
hasn't gone partially bad.
I don't have an answer for your power question.
Best wishes,
Reza
Reza Khayat, PhD
Assistant Professor
The City College of New York
Department of Chemistry, MR-1135
160 Convent Avenue
New York, NY 10031
Tel. (212) 650-6070
www.khayatlab.org
---- Original message ----
>Date: Wed, 19 Nov 2014 15:10:35 +0000
>From: 3dem-bounces at ncmir.ucsd.edu (on behalf of "Fabien
Alexandre Bergeret, Dr" <fabien.bergeret at mcgill.ca>)
>Subject: [3dem] Uranyl Formate powder lifetime
>To: "3dem at ncmir.ucsd.edu" <3dem at ncmir.ucsd.edu>
>
> Dear all,
> I would like to order Uranyl Formate powder from SPI
> (U.S.A). SPI company mentions that Uranium metals
> are subject to special restrictions from U.S.A and
> must be shipped by air only. The price for shipping
> is extremely expensive, more than twice the price of
> the compound itself (for 5g).
> I am considering buying multiple vials but I don't
> know how stable is the Uranyl Formate powder? Can I
> store it for months, years, ...?
> I also noticed on Dr. Grigorief's website that
> Uranyl Formate solutions can be frozen and stored at
> -80C. If you have any experience with this, how long
> Uranyl Formate aliquots can be stored at -80C?
> Thanks in advance for your help.
> Best,
> Fabien Bergeret
> McGill University
> Canada
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