Dichromic acid is a chemical compound with the formula H2Cr2O7. It is a strong oxidizing agent and is often used in various industrial applications, including the production of dyes and pigments. The compound is derived from chromic acid and contains two chromium atoms in its structure. In its concentrated form, dichromic acid appears as an orange-red crystalline solid. It is highly soluble in water and can release toxic chromium ions, which pose environmental and health risks. Due to its hazardous nature, proper safety measures are essential when handling dichromic acid in laboratory or industrial settings.