[3dem] ruthenium tetroxide

[Gibson, Kimberley]

Hi Frank,

I would assume that you could treat RuO4 similar to OsO4, in which case, assume that it will react rather quickly once exposed to air. If the solution turns dark, then it should be discarded.

Upon opening a vial, you can make smaller aliquots of the 0.5% solution in eppendorf tubes and store them immediately at -20 C until needed. Thaw only those aliquots that you would need.

If you store the liquid solution in a fridge, it should be placed in a plastic, sealable container. It might be better to store the liquid in -20 aliquots as it will likely 'go off' overnight if stored at only 4C once the ampule has been opened.

Hopefully this helps. I admittedly, have not worked with RuO4, but chemically it sounds similar enough to Osmium tetroxide.

Best,

Kimberley Gibson

Post-Graduate Associate, Charles Sindelar Lab

Dept. Molecular Biophysics and Biochemistry
Yale University
SHMC-E15
333 Cedar St.
New Haven, CT
06520-8024
USA

Lab (203) 737-4723
Email: kimberley.gibson at yale.edu
________________________________
From: 3dem [3dem-bounces at ncmir.ucsd.edu] on behalf of Frank Polzer [frank.polzer at physik.hu-berlin.de]
Sent: May 28, 2015 13:08
To: 3dem at ncmir.ucsd.edu
Subject: [3dem] ruthenium tetroxide

Dear all,

I recently purchased RuO4 in aqueous solution (0.5%) from EMS which comes in glass ampules.

Can anyone tell me how long after opening the ampules the RuO4 can be used if being stored in dark and refrigerated?

Also, do you have any suggestion what sort of secondary container one could use to store the opened glass ampules in the fridge?


Thank you very much for your help in advance.

Cheers,

Frank


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.ncmir.ucsd.edu/pipermail/3dem/attachments/20150528/e51c71f8/attachment-0001.html>