A clear colorless acid. Highly corrosive, do not touch!
Hydrochloric acid was first produced on an industrial scale in the 19th century, although the acid was in active use long before that, naturally produced in the human stomach to help digest and break down food. The acid has since seen both domestic and industrial usage, from pickling steel to regulating the acidity of solutions to cleaning household equipment. High concentrations of the acid and its fumes, however, can severely damage bodily organs, requiring safety equipment to be worn when handling the acid.
Can be produced in chemistry labs and factories, or at home with the right materials.