Hydrochloric acid
Hydrochloric acid: it is aqueous solution of hydrogen chloride (chemical formula: HCl), belonging to inorganic strong monoacid, and having wide range of industrial use. Hydrochloric acid is a colorless and transparent liquid with a strong pungent odor and high corrosiveness. Concentrated hydrochloric acid (the mass fraction is about 37%) has a very strong volatility, so the hydrogen chloride gas will evaporate after the opening of the container containing concentrated hydrochloric acid, and combine with water vapor in the air to produce small drops of hydrochloric acid, so that the top of the bottle will appear acid fog. Hydrochloric acid is the main component of gastric acid, which can promote food digestion, and resist microbial infection
