CrO4, or chromium(VI) oxide, is a chemical compound consisting of one chromium atom and four oxygen atoms. It is commonly found in the form of the chromate ion, which has a negative charge. This compound is known for its bright yellow color and is often used in various industrial applications, including pigments and corrosion inhibitors. In addition to its industrial uses, CrO4 is also significant in environmental chemistry. It is considered a hazardous substance due to its toxicity and potential carcinogenic effects. Proper handling and disposal are essential to minimize risks associated with exposure to chromium compounds.