The common name for hydrochloric acid is muriatic acid.
Hydrochloric acid (HCl) is a colorless, highly corrosive acid that is commonly used in industrial and laboratory settings. It is used to clean and etch metals, remove rust and scale from steel, and adjust the pH of solutions. Hydrochloric acid is also produced by the stomach to aid in digestion and kill harmful bacteria. In some countries, hydrochloric acid is sold under the name "muriatic acid" for use in cleaning and construction.