Muriatic
acid turned cabbage juice bright red and produced a pH of 0. Adult supervision is required when handling this chemical. Muriatic acid is the common name for hydrochloric acid, and given the formula of HCl. It is a strong acid cleaner used on masonry surfaces to clean stains. It can dissolve metals, biological matter like skin and eye, and some rock and cement. It can damage eyes and skin on contact, so gloves and safety glasses are needed. This solution contains 20% HCl. Our stomach acids contain 0.5% HCl and can dissolve flesh. If a chemical tests bright red to cabbage juice, it may be deadly acid