➤ It is used in medical practice in the treatment of carcinomas.

➤ Causes irritation of the skin, mucous membranes of the eyes, leading to dry eye syndrome and respiratory tract in the form of dyspnea.

➤ Affects muscle tone and nervous system function.

➤ Causes impaired oxygen transport to tissue structures.

➤ Surgical instruments are made using platinum-iridium alloys.

➤ Pacemakers are manufactured for patients with angina pectoris.

➤ It is used in iridodiagnostics to examine the pupil structures of the eyes for pathological conditions and to establish a diagnosis.

➤ Iridium tetrachloride (IrCl₄) causes skin corrosion, irritation of the mucous membranes of the eyes, respiratory tract, and gastrointestinal disorders.

➤ Antidote: Symptomatic therapy.

➤ Ir is the heaviest element, with a density of 22.65 g/cm³.

➤ High corrosion resistance, only molten alkalis and sodium peroxide oxidize it.

➤ Adding 10% Ir to Pt doubles its hardness.

➤ Small additions of Ir to Pt, Cr, W, Mo, Ti increase their resistance to acids.

➤ The Mössbauer effect (Nobel Prize, 1961) made it possible to register very weak nuclear manifestations of the 192Ir isotope.

➤ Me[IrCl₆] chloride can be used to separate a mixture of sodium and potassium.