Alchemy Alphabet: NITRE / NITER (Nitrum, Sal nitrum) — common Nitre, : Saltpeter ("Salt of Peter"), Potassium nitrate. Chemical formula=[-NO₃].

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Alchemy Alphabet: NITRE / NITER (Nitrum, Sal nitrum, Sal nitri) — common Nitre, : Saltpeter (Saltpetre, "Salt of Peter"), Potassium nitrate: Chemical formula=[KNO₃]. Chemical formula=[-NO₃].

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