The nitrite form seems to have a somewhat limited life of 36 months... what this means I'm not sure- as far as it's effectiveness in curing. I assume it gradually oxidizes to the NO2 and leaves a salt behind? BBally might be able to answer this. The nitrate form would last alot longer, altho I cannot find a reference on it.
I have used Morton's TQ that's 3 years old in the past and had no problem...
http://www.inorganics.basf.com/p02/C...it/Haltbarkeit
I have used Morton's TQ that's 3 years old in the past and had no problem...
http://www.inorganics.basf.com/p02/C...it/Haltbarkeit
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