Iridium(III) oxide

  • Iridium trioxide
  • Iridium sesquioxide
  • Diiridium trioxide
Formula
Ir2O3
Structure
Description
Black powder.

Registry Numbers and Inventories.
CAS
1312-46-5
EC (EINECS/ELINCS)
215-196-5
Merck
12,5100
Canada DSL/NDSL
DSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
Ir2O3
Formula mass
432.43
Melting point, °C
1000 (decomposes)
Boiling point, °C
 
Solubility in water
Insoluble

Hazards and Protection.
Storage
Room temperature.
Protection
PVC or other plastic material gloves. Safety glasses with side-shields.
Small spills/leaks
Eliminate all ignition sources. Absorb and/or contain spill with inert materials (e.g., sand, vermiculite). Then place in appropriate container. For large spills, use water spray to disperse vapors, flush spill area. Prevent runoff from entering waterways or sewers.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing and spontaneously flammable products.

Fire.
Fire fighting
Use dry chemical, CO2, water spray or alcohol foam to extinguish. Water mist may be used to cool closed containers. wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear.
Combustion products
Burning produces irritant fumes.
Health
1
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure effects
Chronic exposure may cause nausea and vomiting, higher exposure causes unconsciousness.
   Ingestion
May be harmful if swallowed.
   Inhalation
May cause irritation of respiratory tract.
   Skin
May cause allergic skin reaction. May cause skin irritation and/or dermatitis.
   Eyes
Avoid contact with eyes.

First aid
 
   Ingestion
Do not induce vomiting without medical advice.
   Inhalation
Move to fresh air. Call a physician immediately.
   Skin
Rinse immediately with plenty of water and seek medical advice.
   Eyes
In the case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

Transport.