What is this old bottle of 'Uranium' found at my workplace?

[harborwolf]

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.

 

[nikkkom]

Apparently, UF6 can be white:

http://web.ead.anl.gov/uranium/guide/uf6/

 

[mfb]

UF6 should be U(VI) not (IV).
It might be hard to judge the color of the powder if the glass is colored as well.

Here is the full-size photo:

 

[harborwolf]

UF6 should be U(VI) not (IV).
It might be hard to judge the color of the powder if the glass is colored as well.

Here is the full-size photo:

The bottle itself is much taller than fat, not sure why this photo just won't upload properly, but your comment about the glass coloring it makes sense.