Gold potassium iodide is a substance that is commonly used in photography and medical treatments. It is also known by other names such as gold iodide and potassium auroiodide. Other synonyms for this compound include potassium gold cyanide, aurum potassium iodide, and auric potassium iodide. These alternative names are often used in scientific literature, photography manuals, and medical reference books. The chemical formula for gold potassium iodide is AuKI4, and it is a bright yellow crystalline powder that is soluble in water and alcohol. Despite its diverse applications, this compound is most commonly used in the field of photography.