Potassium bromide is a chemical compound made up of potassium and bromine, represented by the formula KBr. It appears as a white crystalline powder and is highly soluble in water. Historically, it has been used in various applications, including as a sedative in medicine and as a photographic chemical. In addition to its medicinal uses, potassium bromide is also utilized in laboratories and industries. It serves as a reagent in chemical reactions and is sometimes used in the production of certain types of glass. Its properties make it valuable in both scientific and practical applications.