How long is SN good for to store away for usage later

[jk9761]

How long is SN good for to store away for usage later

 

[Hercules]

If you don't open it and keep it away from moisture, it should last for many years.

 

[jk9761]

thanks

 

[Someone123]

O)nce you open it though I have read that half of it converts to sodium nitrate every 90 days, which won't do the job. NOt sure exactly how accurate this is, but it is a concern.

 

[theboy]

years, until you open the bag