Potassium Nitrate is an ionic compound used as a strong oxidant. This substance with the chemical formula KNO3 is available in nature as a white powder or white or gray crystalline salt. This substance is used in agriculture industry as fertilizer due to its high content of nitrogen. This substance is known as a non-flammable material, However, this ionic compound can be used as a catalyst for combustion materials. It can also explode if exposed to heat or fire for a long time. Large amounts of this Nitrate in reaction with combustion materials or fire can cause explosion.