SYNONYMS Hydrochloric acid;Hydrochloric acid gas;Hydrochloric acid, anhydrous;hydrogen chloride;Hydrogen chloride (HCl);Hydrogen chloride ClH;1-2 Hydrochloric Acid AR;12 Hydrochloric Acid AR 36%;Anhydrous hydrochloric acid;Anhydrous hydrogen chloride CAS NO:7647-01-0