Back Koningswater Afrikaans ماء ملكي Arabic تیزاب سلطانی AZB Царская гарэлка Byelorussian Царска вода Bulgarian Aqua regia BS Aigua règia Catalan Lučavka královská Czech Патша шывĕ CV Kongevand Danish
Aqua regia (Royal water in Latin) is a very strong acid. It is made by mixing one part concentrated nitric acid and three parts concentrated hydrochloric acid. The acid was named by alchemists because it can dissolve the noble metals gold and platinum. Tantalum, iridium and a few other metals are not dissolved by it.