I-aqua regia: ingxube ye-nitric acid ne-hydrochloric acid encibilikisa igolide neplatinamu. Ayinambala lapho ixutshwa, bese iba ophuzi-owolintshi ojulile njengoba kwakheka i-nitrosyl chloride ne-chlorine ekhululekile; yenziwa intsha ngoba ayigcinakali. Iyagqwala kakhulu, inentuthu eminyanisayo.