What is Sal Petrae used for?
What is Sal Petrae used for? Its common names include saltpetre, from Medieval Latin sal petrae: “stone salt” or possibly “Salt of Petra” (saltpeter in US English), Nitrate of potash, and nitre. The name Chile saltpeter is applied to sodium nitrate, a different nitrogen compound that is also used in explosives and fertilizers. How did […]