Needed to just seal some little wood pieces and had used up the 2lbs cut I made a while back so I returned to the can of zinzer in the cabinet. It is past it's use by date and I planned to test to make sure it would dry without being tacky and such before using it. The pieces will get painted before use so I didn't think that it was that important if it was a little old as long as it dried properly. I didn't notice anything odd about the can, but when I went to pry the lid off it nearly took my head off! The can was not hot but was under significant pressure! Not too much longer I think it would have blown the lid off in the cabinet all by itself.
I know that in canned goods that botulism can grow in them making them under pressure. Can the same thing grow in shellac?! There were some deposits up above the level in the can that looked like they might have been mold growing, but I would have thought the alcohol in there would have kept anything like that from happening? Did I just get a lung full of botulism? Has anybody else ever seen this happen?
If you're opening an old can of shellac I'd recommend wearing goggles!
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