Potassium Nitrate Powder is used for the fertilizers, fireworks, tree stump removal, and propellants. This chemical compound has a chemical formula KNO3. Offered is a naturally occurring mineral, suited for the industries of fertilizer, anaphrodisiac, amateur rocketry, fireworks, food preservatives & more. This is a source of nitrogen, suited for making several types of burning fuses. Potassium Nitrate Powder Potassium is a high-quality chemical compound, which is included with potassium, oxygen and nitrogen.