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:      Barium Oxide                                                                              Formula:            BaO

CAS #:                1304-28-5

II           HAZARDOUS INGREDIENTS

Hazardous Components     %                     OSHA/PEL        ACGIH/TLV                    Sec 302                Sec 304                Sec 313

Barium                                  0-100               .5 mg (Ba)/m³     .5 mg (Ba)/m³                    No                       No                       Yes

Barium Compounds              0-100               2.5 mg/m³           2.5 mg/m³                          No                       No                       No

HMIS Ratings: Health: 2   Flammability: 0       Reactivity: 1

III         PHYSICAL DATA

Boiling Point:                   2000 ^oC                                                                         Melting Point:                  1918 ^oC

Specific Gravity:              5.72 g/cc                                                                       Vapor Density:                 N/A

% Volatiles:                      N/A                                                                               Solubility in H₂O:            Soluble

Appearance and Odor:    Gray-white to yellowish powder or granules, no odor.

IV         FIRE AND EXPLOSION HAZARDS DATA

Flash Point: N/A                                                                                                    Autoignition Temperature: N/E

Flammable Limits: Upper: N/E  Lower: N/E

Extinguishing Media: Use suitable extinguishing media for surrounding materials and type of fire.

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 & Explosion Hazards: May emit toxic fumes when heated to decomposition.

V           HEALTH HAZARD INFORMATION

Effects of Exposure:

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

              Barium compounds may cause severe gastroenteritis, including abdominal pain, vomiting and diarrhea, tremors, faintness, paralysis of the arms and legs, and slow or irregular heartbeat. Severe cases may produce collapse and death due to respiratory failure. Soluble barium compounds are more likely to cause these effects than insoluble compounds. Inhalation of fumes may cause sore throat, coughing, labored breathing, and irritation of the respiratory tract as well as the above symptoms.

Carcinogenicity: NTP: No           IARC: No          OSHA: No

EMERGENCY AND FIRST AID PROCEDURES:

INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult. Seek immediate medical advice.

INGESTION: If conscious, give 1 to 2 glasses of water and induce vomiting. Seek immediate medical attention. Never induce vomiting or give anything by mouth to an unconscious person.

SKIN: Remove any contaminated clothing, brush off of skin, flush with running water, wash carefully with soap and water. Consult a doctor.

EYES: Flush eyes with plenty of lukewarm water, including under upper and lower eyelid for at least 15 minutes. Consult a doctor.

VI         REACTIVITY DATA

Stability: Stable

Conditions to Avoid: No data

Incompatibility (Material to Avoid): Water/moisture, acids, H₂S, SO₃, N₂O₄

Hazardous Decomposition Products: Barium fume, barium oxide fume.

Hazardous Polymerization: Will not occur.

VII        SPILL OR LEAK PROCEDURES

Steps to be Taken in Case Material is Released or Spilled: Wear appropriate respiratory and protective equipment specified in section VIII. Vacuum up spill using a high efficiency particle absolute (HEPA) air filter and place in a closed container for proper disposal. Take care not to raise dust.

Waste Disposal Method: Dispose of in accordance with Local, State and Federal Waste Disposal Regulations.

VIII      SPECIAL PROTECTION INFORMATION

Respiratory Protection (Specify Type): NIOSH approved dust-mist-fume respirator

Ventilation: Use local exhaust ventilation to keep fume or dust levels as low as possible.

Protective Gloves: Rubber

Eye Protection: Safety Glasses.

Other Protective Clothing or Equipment: Protective gear suitable to prevent contamination.

IX         SPECIAL PRECAUTIONS

Precautions to Be Taken in Handling and Storage: 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

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

Dated:                  July 2005