Iridic acid, also known as iridium acid, is a chemical compound that belongs to a group of acids derived from the rare and precious metal, iridium. It is known for its strong acidic properties and is often used in various industrial processes. Synonymous terms for iridic acid include iridium hydrogen sulfate, iridium sulfate, and iridium sulfate(IV). These synonyms accurately reflect the composition and characteristics of the compound. Iridic acid's unique properties make it a valuable component in applications such as catalysis, electrochemistry, and pharmaceutical research. Due to its scarcity and specific attributes, iridic acid is highly sought after within scientific and technological fields.