What is NaNO4?

Answer 1

There's no such thing as NaNO4.

However, NaNO3 is sodium nitrate.

HNO4 is peroxynitric acid, which is very unstable, and no known salts exist.

Answer 2

NaNO4 refers to sodium nitrite, a chemical compound commonly used as a food preservative, color fixative, and curing agent in meats. It is also used in medicine for the treatment of cyanide poisoning and certain heart conditions. However, sodium nitrite can be toxic in high doses, so its use must be carefully regulated.