I was wondering if anyone could give me some insight as to what I found at my work the other day. We have old chemicals (some REALLY old) that turn up in random cabinets from time to time, and this time I was a bottle with a mostly-decayed label where the only thing that could be read was 'uranium' and then (iv) in parenthesees. Now, it looks like a fine white powder, and at some point I think moisture got into it. I haven't opened it (rule #1?), and I've already contacted my haz-waste person, but I was hoping you guys might be able to give me an idea as to what it is. All of the Uranium dioxides and nitrates that I'm seeing aren't white powders... I'm attaching the photo because I can't seem to figure out how to insert the image... thanks for any help.