Hydrochloric Acid is a strong, corrosive acid that is commonly found in the stomach and has a variety of industrial uses. It is a clear, colorless solution of hydrogen chloride (HCl) in water and highly corrosive and can cause severe damage when in direct contact with living tissues. This is used in the production of organic compounds, such as vinyl chloride for PVC, and in the manufacturing of various inorganic compounds. Hydrochloric Acid is often used to regulate the pH of solutions and is an essential reagent in various chemical reactions.