Ammonium Iridi-nitrite, (NH₄)₃Ir(NO₂)₆

Ammonium Iridi-nitrite, (NH₄)₃Ir(NO₂)₆, may be prepared by addition of sodium nitrite and ammonium sulphate to a warm solution of iridium sulphate. It separates out as a white powder, similar to the potassium salt. When boiled with water it evolves nitrogen, and heated in the dry state it detonates.