this post was submitted on 30 Nov 2024
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[–] [email protected] 9 points 4 days ago (1 children)

As a chemist, I will go ahead and inform you confidently that Potassium Iodide in a dry place will outlast you by a significant margin. It's very chemically stable.

[–] [email protected] 1 points 4 days ago (3 children)
[–] [email protected] 7 points 4 days ago* (last edited 4 days ago)

They’re required to put some date, and nobody wants to pay for a 50-year medical study to show what chemists already know: KI will still be KI.

[–] [email protected] 6 points 4 days ago

Regulation compliance probably

[–] [email protected] 5 points 4 days ago

Probably to account for people who won't store it properly, degradation of the packaging material, etc.

For example, if you store your blister pack of KI on a sunny shelf in your bathroom, UV rays eventually weaken the plastic packaging, cracks develop in the plastic letting in water vapor from your shower, and a stray mold space makes its way in as well and eventually you end up with mold growing on your pills. The KI itself may still be perfectly fine and able to do its job, but that mold might make you sick.