Na2Cr2O7, or sodium dichromate, is an inorganic compound composed of sodium, chromium, and oxygen. It appears as an orange-red crystalline solid and is highly soluble in water. Sodium dichromate is primarily used in various industrial applications, including as a pigment, in leather tanning, and as a corrosion inhibitor. This compound contains chromium in the +6 oxidation state, which is known for its toxicity and environmental hazards. Due to its potential health risks, strict regulations govern its use and disposal. Proper safety measures are essential when handling Na2Cr2O7 to prevent exposure and contamination.