Amonium klorida NH4Cl (uga Sal ammoniac, salmiac, nushadir salt, sal armagnac, sal armoniac, salt armoniack) iku, sajeroning wanguné sing murni, sawijining kristal uyah amonia awerna putih sing bisa larut. Larutan amonium klorida kalebu larutan asem. Sal ammoniac iku jeneng amonium klorida sajeroning wangun mineral alamiah. 