ABC of Safety in the Biological Sciences
SODIUM FLUORIDE (NaF)
SYNONYMS
None known.
GENERAL PRECAUTIONS
Avoid skin and eye contact.
Avoid inhalation or ingestion.
Keep away from heat.
Keep away from moisture.
Keep away from acids or acid fumes.
Wash hands thoroughly after handling.
CHARACTERISTICS
Cubic or tetragonal crystals.
HEALTH HAZARD DATA
Sodium fluoride is very toxic by any route into the body. It can
be absorbed through the skin in concentrations sufficient to
cause narcosis. It can cause severe vomiting, diarrhoea, skin
rashes and damage the central nervous system. It is a strong eye
irritant.
TREATMENTS
Skin immediately remove contaminated clothing and wash the
affected area with soap or mild detergent and large amounts of
water until all evidence of the chemical has been removed
(approximately 15 minutes). If irritation persists seek
immediate medical attention. Wash contaminated clothing before
reuse.
Eyes immediately wash the affected eye with large amounts of
water until all evidence of the chemical has been removed
(approximately 15 minutes). 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. If irritation persists or develops seek medical
attention.
Ingestion wash out the mouth thoroughly with water and give
water to drink. Give at least one ounce of vinegar in an equal
amount of water. Induce vomiting by touching a finger to the
back of the throat. Seek immediate medical attention.
INCOMPATIBILITY
Keep away from acids and acid fumes. Absorbs moisture. Keep the
container tightly closed.
STORAGE
Store in a cool, dry atmosphere away from heat, acids or acid
fumes.
HANDLING
Use a fume hood to minimise exposure to this substance. Wear
protective clothing. A long sleeved laboratory coat or gown,
rubber gloves, safety goggles and a face mask as a minimum
standard.
DISPOSAL
WEAR:
Rubber gloves, safety glasses and laboratory coat.
SPILLS:
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.
PACKAGE LOTS:
Add slowly to a large container of water. Stir in a slight
excess of soda ash. If fluoride is present add slaked lime. Let
stand for 24 hours. Decant or siphon into another container and
neutralise with 6M hydrochloric acid. Discharge to sewer with a
large excess of water. The sludge may be added to land fill.
ENVIRONMENT:
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