caustic acid

Is Hydrochloric Acid Caustic? Hydrochloric acid is a clear, poisonous liquid. It is a caustic chemical and highly corrosive, which means it immediately causes severe damage to tissues, such as burning, on contact. Is caustic soda the same as hydrochloric acid? Hydrochloric acid (HCl) and caustic soda (NaOH) are both widely used chemicals for water