I just need help identifing the difference between potasium nitrate and sodium nitrate and saltpeter. Are they all the same or different. This online definition of sodium nitrate confused me even further.http://www.infoplease.com/ce6/sci/A0845795.html
"sodium nitrate...closely resembles potassium nitrate (saltpeter or niter)..."
-ok so saltpeter is potassium nitrate!
"Sodium nitrate is also called soda niter or Chile saltpeter"
-ok so saltpeter is sodium nitrate?
so is saltpeter potassium nitrate or sodium nitrate???