Sodium dichromate is a chemical compound with the formula Na2Cr2O7. It appears as an orange-red crystalline solid and is primarily used in various industrial applications, including the production of pigments, leather tanning, and as a corrosion inhibitor. This compound contains chromium in its hexavalent state, which makes it a strong oxidizing agent. However, sodium dichromate is also considered hazardous due to its toxicity and potential carcinogenic effects, necessitating careful handling and disposal in accordance with safety regulations.