Chromates are inorganic compounds that contain the chromium(VI) ion. They have a yellowish color and are used in a variety of industrial processes including metal surface treatment, corrosion inhibition, and leather tanning. Some synonyms for chromates include chromic acid, chromium oxide, dichromate, and chromate ion. These compounds are highly toxic and can cause serious health problems if ingested or inhaled. Therefore, their use is closely monitored in many countries around the world. Despite their toxicity, chromates continue to be used in some industries due to their unique chemical properties and effectiveness in certain applications.