<unk>  is the aqueous solution of hydrogen chloride gas <unk> . It is a strong<unk> , the major component of gastric<unk> , and of wide industrial use.<unk>  must be handled with appropriate safety precautions because it is a highly corrosive liquid.<unk> , or muriatic<unk>  by its historical but still occasionally-used name, has been an important and frequently-used chemical from early history, and was discovered by the alchemist Jabir ibn Hayyan around the year 800. It was used throughout the Middle Ages by alchemists in the quest for the philosopher's stone, and later by several European scientists including Glauber, Priestley, and Davy in order to help establish modern chemical knowledge.
From the Industrial Revolution, it became an important industrial chemical for many applications, including the large-scale production of organic compounds, such as vinyl chloride for PVC plastic, and MDI/TDI for polyurethane, and smaller-scale applications, such as production of gelatin and other ingredients in food, and leather processing. About 20 million metric tonnes of<unk>  gas are produced annually.
Hydrochloric acid
Dichloroacetic acid
Phosphoric acid
Sodium hypochlorite
Potassium permanganate
Magnesium peroxide
Boric acid
Sodium monofluorophosphate