Ammonium chromate is primarily used in analytical chemistry as a reagent for identifying and quantifying various substances. It is employed in the preparation of other chromium compounds, often serving as an intermediate in chemical synthesis. In the field of photography, it is utilized in certain photographic processes to enhance image quality. Additionally, it finds application in dyeing and printing textiles, where it acts as a mordant to fix dyes onto fabrics. In corrosion inhibition, ammonium chromate is used to protect metal surfaces from oxidation and degradation. It is also applied in pyrotechnics to produce specific colors in fireworks. However, due to its toxic and carcinogenic nature, strict safety measures are required during handling and use.