BARIUM OXIDE

Section I Kurt J. Lesker Company Emergency Phone Numbers 1925 Worthington Avenue Clairton, PA 15025 Chemtrec 800/424-9300 Ph: 412/387-9200 Fax: 412/233-4275 Poison Center 800/562-8236

Chemical Name and Synonyms Date of Last Revision Barium Oxide 4/8/91

Formula Chemical Family Chemical Abstract No. BaO Metal Oxide 1304-28-5

TSCA Calc. Molecular Wt. Listed 153.36

Section II Hazardous Ingredients Hazardous Ingredients CAS # % TLV OSHA PEL

1304-28-5

Section III Physical Data Boiling Point (0oC): 2000oC Density (gmcc): 5.72 Vapor Pressure: NA % Volatile by Volume:

Reaction with Water: Evaporation Rate (H2O -1): Solubility in Water: Exothermic reaction Melting Point (oC): 1923 forms Ba (OH)2, soluble, moderate

Appearance and Odor: Pale yellow powder, Other Comments: Absorbs CO2 no odor readily from air

Section IV Fire & Explosion Hazard Data Flash Point (method) Autoignition Temp. Flammability LEI UEI NA NA

Extinguishing Media:

Special Fire Fighting Procedures: Not a fire hazard under most conditions. Wear SCBA unit when fighting chemical fires. Unusual Fire and Explosion Hazards: None

Section V Spill or Leak Process Steps to be Taken in Case Material is Released or Spilled: Absorb with sand or inert material

Waste Disposal Method (Consult federal, state or local authorities for proper disposal procedures.): Dispose of in an approved hazardous waste disposal site.

Section VI Health Hazard Data Toxicity Data HMIS Hazard Rating Health: Flammability: Reactivity: Personal Protection:

Route(s) of Entry Inhalation X Skin X Ingestion X

Effects of Overexposure (acute and chronic) Inhalation: Lung: Soluble barium compounds may cause irritation of the nose, throat and bronchi. In contact with moisture, this material can be corrosive and irritate mucous membranes. Long term exposure to barium compounds have been reported to cause a benign pneumoconiosis (baritosis). Dermal/Eye Contact: Other (specify): Ingestion causes severe gastroenteritis. Systemic effects include muscle paralysis, slow heart rate, ringing in the ears, and dizziness. This compound may be irritating and corrosive to moist skin. (LD50 orat rat - 150 mg/kg)

Medical Conditions Generally Aggravated by Exposure: Carcinogenicity NTP: IARC Monographs OSHA Regulations

Emergency and First Aid Procedures Ingestion: Do not induce vomiting, get medical attention Inhalation: Remove to fresh air, and get medical attention Skin Contact: Remove powder by dusting or some dry way; then flush with water. Eye Contact: Flush with plenty of water for 15 minutes, and get medical attention.

Section VII Reactivity Data Stable: X Conditions Contributing to Instability Unstable:

Incompatibility (materials to avoid): Moisture, H2S, SO3, N2O4 Hazardous Decomposition Products - Thermal and Other (list): NK

Hazardous Polymerization Conditions to Avoid May Occur: Will Not Occur:

Section VIII Special Protective Information Respiratory Protection (specify type). Use Only Niosh Approved Equip. Filter-dust, fume, mist

Ventilation (always maintain exposure below permissible limits) Local Exhaust: recommended Mechanical (general): Special: Other: Protective Gloves: Neoprene Eye Protection: face shield

Other Protective Equipment/Work Practices: Prevent skin contact. Section IX Special Precautions Precautions to be Taken in Handling and Storing: Wash thoroughly after handling. Do not get in eyes, on skin or clothing. Do not breath dust, vapor, mist or gas. Keep container tightly closed. Transportation Requirements DOT Class: ORM-B UN Number: 1884 IMCO Class: 6.1 Other:

The above information is accurate to the best of our knowledge. However, since data, safety standards, and government regulations are subject to change and the conditions of handling and use, or misuse are beyond our control, the Kurt J. Lesker Company makes no warranty, either express or implied, with respect to the completeness or continuing accuracy of the information contained herein and disclaims all liability for reliance thereon: User should satisfy himself that he had all current data relevant to his particular use. ND = NO DATA FOUND NA = NOT APPLICABLE