I'm trying to carefully oxidize and isolate an Fe(IV) from an Fe(II) center. The oxidant of choice seems to be trimethylamine N-oxide. The lab has a small amount of it but it's been stored for about a year under standard atmosphere. Given the hygroscopic nature of the compound it's most likely wet at this point.
Has anyone worked with this material before and would know a safe way to purify it? There's not much of it and I'd rather not waste it. I've read a few references that have stated NOT to simply dry with ether as it causes an explosion.
If it's not possible to purify safely would there be any other possible oxidants to use?