ABC of Safety in the Biological Sciences
LEAD NITRATE (Pb(NO3)2)
SYNONYMS
None known.
GENERAL PRECAUTIONS
Avoid ingestion.
Keep away from heat or fire.
Keep away from reducing agents.
Wash hands thoroughly after handling.
CHARACTERISTICS
White crystals or crystalline powder.
HEALTH HAZARD DATA
A highly toxic solid. Toxicity is usually by ingestion. There is
not a problem with inhalation. Toxicity is associated with
severe abdominal pain, metallic taste, nausea and dizziness.
Lead is a cumulative poison and indications of the cumulative
effect are loss of weight, pyorrhoea and `lead line' on the
gums.
TREATMENTS
Skin immediately wash the affected area with large amounts of
water until all evidence of the chemical has been removed
(approximately 15 minutes).
Eyes immediately wash the affected eye with large amounts of
water until all evidence of the chemical has been removed
(approximately 15 minutes).
Ingestion rinse the mouth with water and give water, milk or
milk of Magnesia to drink. Seek immediate medical advice. Milk
of Magnesia is available from any pharmaceutical outlet and
should be part of your laboratory first aid kit if lead nitrate
is handled in your laboratory.
INCOMPATIBILITY
Heating produces toxic fumes of nitrogen. There is the
possibility of a vigorous reaction with reducing agents with the
conversion to ammonia.
STORAGE
Do not store with organic matter or reducing agents. Store in a
cool, dry atmosphere in glass, plastic or plastic lined
containers.
HANDLING
Wear protective clothing. A long sleeved laboratory coat or gown
and rubber gloves as a minimum standard.
DISPOSAL
WEAR:
Rubber gloves, safety glasses, laboratory coat and a respirator
(or work in a fume hood).
PACKAGE LOTS AND RECOVERED SPILLS:
Convert to nitrates with a minimum of concentrated nitric acid.
Evaporate in a fume hood to a thin paste. Add water and saturate
with hydrogen sulphide. Filter, wash and dry the precipitate.
ENVIRONMENT:
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