ジョセフ・ルイ・ゲイ＝リュサック
Gaseous HCl was called "marine acid air". The name "muriatic acid" has the same origin ("muriatic" means "pertaining to brine or salt", hence "muriate" means hydrochloride), and this name is still sometimes used. The name "hydrochloric acid" was coined by the French chemist Joseph Louis Gay-Lussac in 1814.