ABC of Safety in the Biological Sciences
BARIUM SULPHATE (BaSO4)
White powder, no odour.
Barium sulphate is incompatible with aluminium powder with which it causes a violent "thermite" reaction at high temperatures.
HEALTH HAZARD DATA
Barium sulphate is regarded as being nontoxic and is often used as an opaque medium in radiography of the alimentary system. It will irritate eyes and the respiratory tract.
HANDLING and GENERAL PRECAUTIONS
Avoid eye contact.
Avoid inhalation of the powder.
Wear protective clothing to avoid skin or eye contact. A long sleeved laboratory coat or gown, rubber gloves, safety goggles and a face mask as a minimum standard.
Skin not generally considered to be a hazard.
Eyes immediately wash the affected eye with large amounts of water until all evidence of the chemical has been removed (approximately 15 minutes). If irritation persists seek medical advice.
Inhalation there should be temporary discomfort only. Remove from the area of exposure and allow to rest.
Ingestion not considered to be a hazard.
Store in a cool, dry atmosphere away from heat and aluminium powder.
DISPOSAL: The waste may be used as fill in reclaiming low areas or may be dumped in a landfill.