hi, here's another site for storage life for about anything. http://www.glitchproof.com/glitchproof/storlifofgro.html also, my grandmother would buy soda in cans and keep them down in her basement and forget about them. There was many a time that I picked up an empty but still technically sealed soda can. However, not sure on how long that actually took. 1-2 years?? velkyn