Potassium nitrate is not particularly dangerous or toxic in small amounts. Ingesting potassium nitrate in larger amounts, however, has been linked to cancer, especially in small children.
Potassium Nitrate High Purity Milled – 1 Pound
$3.00 per lb / 2lb min
Potassium nitrate is probably the most extensively employed oxidizer in pyrotechnics. It used for a wide variety of applications, the most important of which is in the manufacture of black powder. Potassium nitrate is a white powder or long needle-like crystals.