Hazard Xi:Irritant
Risk R36/37/38
Safety
The pure metal is clinically inert. Most of its compounds are poorly soluble in water and thus are not absorbed efficiently by the body. The chlorides are poison or moderately toxic by ingestion and are eye and skin irritants. There are no reports of acute or chronic health effects to workers handling iridium and its compounds. The 190Ir and 192Ir radioisotopes are used in clinical radiography and most references to the toxicity of iridium relate to these isotopes.
A catalytic metal. The powdered metal may ignite spontaneously in air. Violent reaction or ignition on contact with interhalogens (e.g., bromine pentafluoride, chlorine trifluoride). Alloys with zinc, after extraction with acids, leave heat-sensitive explosive residues. Is attacked by F2, Cl2 at red heat, by potassium sulfate or a mixture of potassium hydroxide and nitrate on fusion, lead, zinc, tin.
Safety Information of Iridium (CAS NO.7439-88-5):
Hazard Codes: 
F,
Xi
Risk Statements: 36-36/37/38-11
R11:Highly flammable.
R36/37/38:Irritating to eyes, respiratory system and skin.
R36:Irritating to eyes.
Safety Statements: 16-26-36/37/39
S16:Keep away from sources of ignition.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
