What is the chemical formula of Chile salt petre?

Answer: NaNO3

Chile salt petre

In the earth crust, nitrogen occurs as sodium nitrate (NaNO3) called Chile salt petre, a deliquescent crystalline sodium salt that is found chiefly in northern Chile. It is a white crystalline solid, odourless and has a slightly bitter taste. It is non-combustible and is highly soluble in water, hydrazine and ammonia. It dissolves in alcohol, slightly dissolves in pyridine, and completely insoluble in acetone.

Uses of Chile salt petre

It is widely used in the manufacturing pyrotechnics, glass, food preservatives, propellant, fertilizers, smoke bombs, pottery enamels, and solid rocket.

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