Selenic acid is a chemical compound with the formula H₂SeO₄. It is an oxoacid of selenium and is known for its strong oxidizing properties. Selenic acid is typically produced by oxidizing selenium dioxide and is used in various industrial applications, including the synthesis of other selenium compounds. In its pure form, selenic acid is a colorless, viscous liquid that is highly soluble in water. It can be hazardous, as it can cause severe burns and is toxic if ingested. Proper safety precautions are essential when handling this compound in laboratory or industrial settings.