ABC of Safety in the Biological Sciences
BARIUM CHLORIDE (BaC12.2H2O)
SYNONYMS
None known.
CHARACTERISTICS
Colourless crystals or crystalline powder.
INCOMPATIBILITY
Reacts violently with bromofluorene and 2furan percarboxylic
acid.
HEALTH HAZARD DATA
This substance is a skin, eye and respiratory tract irritant. It
is a neurotoxin which attacks the muscles causing paralysis and
possible death. It is a strong oxidising agent. Acute exposure
to the skin and eyes causes redness and pain. Inhalation causes
sore throat, coughing, shortness of breath, faintness and
possible paralysis of arms and legs. Ingestion causes abdominal
pain, vomiting, diarrhoea, trembling, faintness, paralysis of
arms and legs and possible death.
HANDLING and GENERAL PRECAUTIONS
Use a fume hood.
Avoid skin and eye contact.
Avoid inhalation or ingestion of the powder.
Keep away from heat.
Keep away from moisture.
Keep the lid tightly closed.
Wash hands thoroughly after handling.
Use a fume hood that will keep the level of exposure to the dust
at a minimum. The recommended threshold level of exposure is 0.5
mg/m3. If the level of exposure is expected to exceed this limit
then a respirator is recommended. Wear protective clothing. A
long sleeved laboratory coat or gown, rubber gloves, safety
goggles and a face mask as a minimum standard.
TREATMENTS
Skin immediately wash the affected area with large amounts of
water until all evidence of the chemical has been removed
(approximately 15 minutes). If irritation or pain persist seek
medical attention.
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 or pain persist seek
immediate medical attention.
Inhalation remove from the area of exposure to fresh air. If
breathing has ceased apply artificial respiration. Keep warm and
allow to rest. Seek immediate medical attention.
Ingestion wash the mouth thoroughly with water then give one
tablespoon of Epsom salts in a glass of water. Induce vomiting
by touching a finger to the back of the throat. Seek immediate
medical advice. Epsom salts are available off the shelf in
pharmacies. If barium chloride is handled in your laboratory
then Epsom salts should be in your laboratory first aid kit.
Never give anything by mouth to an unconscious person nor induce
vomiting.
STORAGE
Keep the container tightly closed. Store in a cool, dry
atmosphere away from heat, sparks or naked flames and
incompatible substances. Keep away from moisture.
DISPOSAL:
PACKAGE LOTS AND RECOVERED SPILLS: Dissolve the waste in
6M hydrochloric acid and filter. Neutralise the filtrate with 6M
ammonium hydroxide (use litmus) then precipitate with excess
sodium carbonate. Filter, wash and dry the precipitate.
If the waste is of a very small volume:
Solid - collect in a beaker, dissolve in a large amount
of water. Add soda ash, mix and neutralise with 6M hydrochloric
acid and discharge to sewer with large excess of water. Solution
- cover with soda ash, mix and scoop into a beaker of water.
Neutralise with 6M hydrochloric acid and discharge to sewer with
a large excess of water. If a spill contains a fluoride, add
slaked lime in addition to the above treatment.
ENVIRONMENT.
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