On Mar 3, 10:01*am, Paul Oman wrote:
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.

the part A has begun to crystallize on you. Heating it up (like honey)
would dissolve the milky crystals and make it as good as new!. The part
B will darken over time and develop a strong amonia smell, it is fine to
use.
* * * * * * * * * * * * *paul oman *progressive epoxy polymers, inc *www.epoxyproducts.com/marine.html


I had some West System epoxy that was easily 12 years old that I used
for some repair work and other than the dark-coffee color, it was
fine. I called Gougeon before I used it and they said that other than
the color, so long as it's kept reasonably well sealed it's fine. As
it turns out, the limitation is on the can itself - a year or so
later, the can perforated with rust and began to leak....s