How long does it take to sn to oxidate? (turn into nitrate)

[BlueIce_]

How long?

 

[Lysandre]

A long time. as long as it doesn't turn a proper shade of orange its fine. It may take 2, 3, 4 years... Keep it sealed and it should last long.

 

[Circles]

How long?

Are you asking how long until it turns once opened or how long until it expires overall? For the expiration part here's these threads I've saved up:

https://sanctioned-suicide.net/threads/stop-spreading-misinformation-about-the-storage-of-sn.69105/

https://sanctioned-suicide.net/threads/can-sn-expire.41324/

And considering I've read reports on meat curing forums of people using the same SN all the while opening and sealing it back for over a decade or two. After researching about this I'm atleast 95% it won't expire according to the expiration date it says on the bottles, though I still I have some doubts.