Na2CrO4

Sodium chromate (Na2CrO4) is an inorganic ceramic compound and chromium-based salt commonly encountered in industrial chemistry and materials applications. It serves primarily as a corrosion inhibitor in protective coatings, a pigment in paints and inks, and a chemical intermediate in metal treatment and surface finishing processes. Engineers select sodium chromate for its role in preventing rust and oxidation on steel and other ferrous substrates, though its use is increasingly constrained by environmental and toxicity regulations in many jurisdictions; alternative inhibitors are often preferred in new designs.