ELECTRONIC SPACE PRODUCTS INTERNATIONAL

1050 Benson Way, Ashland, OR 97520

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E-Mail: sales@espimetals.com

MATERIAL SAFETY DATA SHEET

I            PRODUCT IDENTIFICATION

Trade Name:      Praseodymium Oxide                                                                  Chemical Family:             Lanthanides

Formula:            Pr₆O₁₁                                                                                         CAS #:                               12037-29-5

II           HAZARDOUS INGREDIENTS

Hazardous Components                %                        OSHA/PEL                                     ACGIH/TLV

Praseodymium Oxide                       0-100                   N/E                                                   N/E

Particulates not otherwise regulated                             15 mg/m³(dust), 5 mg/m³(resp.)      10 mg/m³

III         PHYSICAL DATA

Boiling Point:                   N/A                                                                               Melting Point:                  2200 ^oC

Specific Gravity:              6.34 g/cc                                                                       Vapor Density:                 N/A

Vapor Pressure:               N/A                                                                               Solubility in H₂O:            Insoluble

Appearance and Odor:    Dark brown solid (powder), no odor.                           % Volatile:                       N/A

IV         FIRE AND EXPLOSION HAZARDS DATA

Flash Point (Method Used): NA                                                                           Autoignition Temperature: N/E

Flammable Limits: Lower: NA   Upper: N/A

Extinguishing Media: Not combustible. Use extinguishing method appropriate for surrounding fire.

Special Firefighting Procedures: Wear a NIOSH/MSHA approved self-contained breathing apparatus and full protective clothing.

Unusual Fire and Explosion Hazard: None

V           HEALTH HAZARD INFORMATION

Effects of Exposure:

Acute Effects: No data was found for this product, but, based on data for other rare earth oxides, it is expected to have low acute inhalation, ingestion, and dermal toxicity, skin contact is expected to be non-irritating, and eye contact is expected to be non-irritating to slightly irritating.

Chronic Effects: Long term inhalation of rare earth oxide dusts may lead to congestion, coughing, granuloma in lungs and hemoglobinemia.

Carcinogenicity: This product does not contain any ingredient designated by IARC, NTP, ACGIH, or OSHA as a probable human carcinogen.

Medical Conditions Possibly Aggravated by Overexposure: None found

EMERGENCY AND FIRST AID PROCEDURES:

INHALATION: Remove from area of exposure. Get medical attention as needed.

INGESTION: If swallowed and victim is fully conscious, induce vomiting immediately by giving two glasses of water and sticking finger down throat. GET IMMEDIATE MEDICAL ATTENTION.

SKIN: In case of contact, immediately wash with soap and plenty of water for at least 5 minutes. Remove contaminated clothing and shoes. Thoroughly clean contaminated clothing and shoes before reuse. Get medical attention if irritation develops or persists.

EYE: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes using an eyewash fountain. Lift upper and lower lids and rinse well under them. Get medical attention if irritation develops or persists.

VI         REACTIVITY DATA

Stability: Stable

Conditions to Avoid: None found

Incompatibility (Material to Avoid): Strong acids

Hazardous Decomposition Products: None

Hazardous Polymerization: Will not occur

VII        SPILL OR LEAK PROCEDURES

Steps to be Taken in Case Material is Released or Spilled: Wear appropriate protective gear. Sweep up into appropriate container. Avoid creating dusting conditions.

Waste Disposal Method: Dispose of in accordance with local, state and federal waste disposal regulations.

VIII      SPECIAL PROTECTION INFORMATION

Respiratory Protection (Specify Type): Use a NIOSH/MSHA approved dust mask under dusting conditions.

Ventilation: Provide adequate ventilation. Use local exhaust under dusting conditions.

Protective Gloves: Recommended

Eye Protection: Safety glasses with side shields. DO NOT WEAR CONTACT LENS.

Other Protective Equipment: Maintain a sink and eyewash fountain in the work area.

IX         SPECIAL PRECAUTIONS

Other Handling and Storage Conditions: Store in a cool, dry place in tightly closed containers. Avoid breathing dusts. Avoid direct or prolonged contact with skin and eyes. Wash hands thoroughly after handling. Do not rub eyes with soiled hands. Do not eat, drink or smoke in the work area.

Other Precautions: Dry powders can build static electricity charges when subjected to the friction of conveying, mixing or sliding. To prevent ignition, provide adequate precautions, such as electrical grounding, or inert atmospheres when material is used in the presence of flammable materials.

              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 damages resulting from handling or from contact with the above product.

Issued by:            S. Dierks

Date:                    January 1991