Is potassium nitrate illegal

Answer 1

Potassium nitrate isn't illegal if you don't buy too much of it. Since potassium nitrate is a major component (along with sulfur and charcoal) of gunpowder which is an explosive, you cannot buy very large amounts of it without getting at least a little bit suspected.

Answer 2

Potassium nitrate is not illegal, but its use may be restricted in certain circumstances due to its potential for misuse in creating explosives or illegal fireworks. It is often regulated and monitored by authorities to prevent unauthorized use.