Good subject, certainly on topic.
However, the photo would look better if you had taken more care with your background. A large piece of white paper curved upward behind the tin would have given you a smooth backdrop. As it is, I keep looking at the upper left hand corner trying to work out what I'm looking at.
Great title - I don't think I'd have spent the time looking at the uses on the side but with the title it really diverted attention. Would have been a nicer shot if you could have kept a clean background as those tiles are a tad in the way, and the texture of the goop itself could be brought out better with a bit more DoF (if sharper you may well win more points for the 'ooo shiny' factor)