MATERIAL SAFETY DATA SHEET

I.   PRODUCT IDENTIFICATION

Manufacturer/Supplier:

ESPI Metals

1050 Benson Way, Ashland, OR 97520

Toll Free (800) 638-2581 * Fax (541) 488-8313

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Product Name:     Iridium IV Oxide

Formula:              IrO₂

CAS Number:       12030-49-8

II.   HAZARDOUS INGREDIENTS

Hazardous Component:  Iridium Oxide

Percent (%):                   0-100

OSHA/PEL:                      1.0 mg/m³

ACGIH/TLV:                    1.0 mg/m³

HMIS Ratings:

Health:                           1

Flammability:                0

Reactivity:                     0

III.   PHYSICAL DATA

Melting Point:                  1100 ^oC

Specific Gravity:             11.66 g/cc (at 20 ^oC)

Solubility in Water:         0.002 g/l (at 20 ^oC)

Appearance and Odor:    Black powder, no odor

IV.   FIRE AND EXPLOSION HAZARDS DATA

Flash Point:  N/A

Flammable Limits:  Not flammable

Extinguishing Media:  CO₂, Foam, dry powder or water.

Special Firefighting Procedures:  Firefighters must wear full face self-contained breathing apparatus with full protective clothing to prevent contact with skin and eyes.

Unusual Fire and Explosion Hazards:  May emit toxic fumes upon decomposition.

V.   HEALTH HAZARD INFORMATION

Effects of Exposure:

To the best of our knowledge the chemical, physical and toxicological properties of iridium oxide have not been thoroughly investigated and reported.

Exposure to iridium compounds may cause irritation to the eyes or respiratory tract.  Toxicity of iridium is not known.  It is predicted to have toxicity similar to osmium and platinum, two members of the same group.

EMERGENCY AND FIRST AID PROCEDURES:

INHALATION:  Supply fresh air.  If required, provide artificial respiration.  Keep patient warm.  Seek immediate medical advice.

INGESTION:  Seek medical treatment.

SKIN:  Wash with plenty of water and soap and rinse thoroughly.  Seek medical attention.

EYES:  Flush eyes with water, lifting upper and lower eyelids, for at least 15 minutes.  Seek medical attention if symptoms persist.

VI.   REACTIVITY DATA

Stability:  Stable

Conditions to Avoid:  Extreme heat.

Incompatible Materials:  All acids, organic solvents, oxidizers

Hazardous Decomposition Products:  Toxic metal oxide fumes.

Hazardous Polymerization:  Will not occur

VII.   SPILL OR LEAK PROCEDURES

Steps to Be Taken in Case Material Is Released or Spilled:  Sweep up and place in airtight plastic container.

Waste Disposal Method:  Ship to precious metal refiner.  Dispose of in accordance with all Federal, State and  Local regulations.

VIII.   SPECIAL PROTECTION INFORMATION

Respiratory Protection:  NIOSH/MSHA approved.

Ventilation:  Fume hood

Protective Gloves:  Rubber for all contact

Eye Protection:  Goggles

Other Protective Equipment:  Normal labwear.

IX.   SPECIAL PRECAUTIONS

Other Precautions:  Store in cool dry place, keep tightly sealed when not in use, read MSDS before using.

Precautionary Labeling:  In compliance with OSHA and NFPA requirements.

Work Practices:  Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels.  Use good housekeeping and sanitation practices.  Do not use tobacco or food in work area.  Wash thoroughly before eating and smoking.  Do not blow dust off clothing or skin with compressed air.  Maintain eyewash capable of sustained flushing, safety drench shower and facilities for washing.

The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide.  ESPI shall not be held liable for any damage resulting from handling or from contact with the above product.

Issued By:             S. Dierks

Date:                    June 2004