sodium nitrite oxygen open

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    [Help] Opened my sodium nitrite is it still usable?

    I opened it for about 3 minutes. the solution is in a bottle. What i found on the net is this: "It is also slowly oxidized by oxygen in the air to sodium nitrate, NaNO3" Another source says its only thermal decomposition that causes this. (Wikipedia?) Its a white powder no real smell. I was...
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