Canned Tomatoes - LONG TERM STORAGE?!

My guess is that the original writer has never stored ANY tomatoe product in a CAN for any amount of LONG TERM.

Assuming the term CAN means STEEL CAN and not the home canning process that involves GLASS JARS, you cannot store any tomatoe product at room temperature for 10 years.

At 5 years at room temperature, you are pushing your luck. The acid in all liquid forms of tomatoes attacks the seals and eats thru. Your first hint will be a black ring on your shelf around the bottom of a couple of cans. When you open the offending can, you will note that the inside of the can has turned dark due to corrosion.

This chemical reaction doubles as you raise the temperature 10 degrees C.