Idophor in bottle shelf life

I stumbled upon a couple of unopened Idophor bottles (original packaging) in my attic. I guesstimate they are 5 to 7 years old and were subjected to some pretty hot attic temps (in Florida) during that time. Would they still be good for sanitizing or should I just pitch them?

 

This question was asked/answered just a few days ago.

http://www.homebrewtalk.com/f11/betadine-has-expiration-date-165951/

 

dumb question perhaps, but is betadine the same thing as idophor?

 

An Iodophor is a preparation containing iodine complexed with a solubilizing agent,

such as a surfactant or povidone (forming povidone-iodine). The result is a water-soluble material that

releases free iodine when in solution. Iodophors are prepared by mixing iodine with the solubilizing agent .

Betadine is the 10% Solution of Povidone-Iodine ( a 10% Iodophor ) .

Hector

 

Prolly good forever.
Don't drink it tho'. It's bad to drink after the expiration date

 

thanks for the clarification on betadine. i guess what i am getting out of this is that it should still kill the bad guys, right?

 

Not a dumb question at all. Chemistry well explained by Hector above. Betadine is basically a brand-name of iodophor solution. http://en.wikipedia.org/wiki/Betadine

 

Did some internet searching and found this article discussing iodophor in detail: http://www.bayareamashers.org/content/maindocs/iodophor.htm

In it, they discuss an unopened box of the stuff found laying around after 5 years, sent some to a lab for testing, and results came back showing it was still good.

So, looks like if it is unopened and not exposed to light, it's prolly good indefinitely.