Devarda’s alloy is primarily used as a reducing agent in analytical chemistry, especially for the quantitative determination of nitrates and nitrites. It is commonly employed in the reduction of nitrate ions to ammonia in aqueous solutions, which can then be distilled and measured. This process is particularly useful in water quality testing and environmental analysis to assess nitrate contamination. Additionally, it finds application in organic synthesis for selective reduction reactions. Its ability to release hydrogen in the presence of water or acids makes it a versatile reagent in laboratory settings.