Can an old can of sterno explode?

Answer 1

YES! there can definitely be explosive power in an old Sterno can. There was in the one I just opened. The Sterno can had been sitting in the base of a fondue set for easily 30 years (probably longer).

Lesson learned:

Never open a can containing anything you are curious about when your head is directly over it.

I gave the can a mild shake before opening it and could tell the contents were in liquid form. The power propelling the lid off was great enough to break the temple of my "indestructible" eyeglasses frame. Fortunately the plastic lens did not break and protected my eye from a direct hit.

Could the power packed in a liquid Sterno can be a reason Sterno no longer offers it?

Answer 2

While it is unlikely for an old can of Sterno to explode, it is still important to handle it with caution. Sterno can become unstable over time, especially if the can is damaged or compromised. It is always best to dispose of old Sterno cans properly and replace them with new ones.