Hydrochloric acid is a strong inorganic acid which completely dissociates in water forming hydronium and chloride ions. Hydrochloric acid is widely used as a chemical reagent and in analytical chemistry for titrations and for digestion of samples for analysis.
Hydrochloric acid is an important chemical reagent used for the production of calcium chloride from limestone, vinyl chloride/PVC resins, and many chlorinated chemicals. Hydrochloric acid is widely used in industry, including steel pickling, oil well acidizing, ore processing, chemical manufacturing and food processing.