Hi, I have some MEKP catalyst which is 3-4 years old.  Is it safe to use this in a new project or could it have "gone off" and thus ruin my project.  MEKP is cheap enough so if there is any risk it won't work and I need to buy some more then that's ok.  If I do need to dispose of this MEKP, what is the recommended way of doing it?  I know MEKP is really nasty stuff (I belive it is about the nastyest chemical used in composites), so want to make sure I dispose of it properly and safely.

Many thanks, lee.