SN durability

[ekomun]

Please forgive me that my English is not so good.

My Question: What about the shelf life/efficacy of SN?

I managed to get SN, which is not easy in Western Europe. It's from Poland and came in a plastic can with 500 gr content. According to the label, 98.5 percent pure.

Is it possible to transfer a smaller amount of it into a smaller vessel, or does this entail the risk that the nitrite will become unusable nitrate in a short time?

(I can't find the search function here. Tried with three browsers. No search button to see.)

 

[HopelessFight]

I know which one you bought, it's probably the most reliable source in the EU (at least of the sources I know), but it's indeed a big plastic can which is hard to hide.

Nitrite turns into nitrate when exposed to oxygen, so I personally wouldn't open the can at all if you don't plan to use it soon and want to keep it as a backup. There should be an expiry date on the plastic can, but I think the shelve life will be longer if it remains unopened and stored correctly.