Left powder jar open, is it OK?

[BrianH]

I was reloading some .223 rounds on Monday and just discovered I forgot to put the cover back on my jar of powder, it's been open for two days. It's a 1 lb jar of H335 and is a little over half full. I reload in the basement and it's pretty cool down there. Any ideas if it's still OK?
Thanks,
Brian

 

[greencobra]

You'll be good

 

[knfmn]

You'll be good

Uh, yeah.

 

[Golddiggie]

Nope, it's ruined. Give it to me for proper disposal...

 

[BrianH]

Thanks