Description: Nitric acid (HNO₃) is a strong monoprotic mineral acid, appearing as a colorless to pale-yellow volatile liquid with a sharp, pungent odor. It fumes readily in air and is completely miscible with water, undergoing near-total dissociation into H⁺ and NO₃⁻ ions. Forms a constant-boiling azeotrope with water (~68% concentration).
Key Uses:
Agriculture: Production of nitrogen fertilizers; soil mineralization; crop protection against diseases and pests.
Food Industry: Equipment sanitizing and cleaning agent (food-grade).
Metallurgy: Acid pickling, etching, and surface treatment of metals.
Pharmaceuticals: Nitrating agent for synthesis of medicines (e.g., nitroglycerin).
Jewelry: Purity testing and refining of precious metals.
Defense: Key reagent in manufacturing explosives and propellants.
Chemical Industry: Catalyst and nitrating agent in organic synthesis and laboratory workflows.