On Mon, 02 Mar 2009 07:50:31 -0800, Frogwatch wrote:

I had some epoxy left over from a project two years ago and I tried to
use it. It seemed to have separated into a watery top part and a
thicker milky bottom part. The whole mess smelled like ammonia.
Nevertheless, I did use some of it by mixing it very well. It took a
long time to cure but it did work. A couple of weeks later, it had
gotten so that I could not even mix it so I had to throw it away. I am
wondering if moisture had condensed as water in the container somehow
but this would be a lot of water, almost a half gallon.

I have some epoxy which is probably over 10 years old. It has
darkened over the years, but it seems to work about the same.
It did not separate, and doesn't smell like ammonia. So, I'm
not sure what's going on with that.

Julien