ABC of Safety in the Biological Sciences
METHYL GREEN (Colour Index No. 42585) (C26H33N3Cl2)
SYNONYMS
Double green SF, light green, ethyl green.
GENERAL PRECAUTIONS
Avoid eye contact.
Combustible keep away from heat or naked flames.
Keep away from oxidising agents.
Wash hands thoroughly after handling.
CHARACTERISTICS
A green, combustible powder.
HEALTH HAZARD DATA
Little is known about the toxicity or general hazards associated
with this dye. However, other dyes in the
triaminotriphenylmethane group are known to be potential
carcinogens, eg. basic fuchsin. A sensible approach to handling
the dye would be to treat it in a similar fashion to basic
fuchsin. Methyl blue is an irritant to eyes, the respiratory
tract and the gastrointestinal tract. The powder is combustible
and should never be handled close to heat or a naked flame.
TREATMENTS
Skin wash the affected area with soap or mild detergent and
large amounts of water until all evidence of the dye has been
removed (approximately 15 minutes).
Eyes immediately wash the affected eye with large amounts of
water until all evidence of the dye has been removed
(approximately 15 minutes). If irritation persists seek
immediate medical advice.
Inhalation remove from the area of exposure to fresh air. If
breathing has ceased apply artificial respiration. Give oxygen
if necessary. Keep warm and allow to rest. Seek medical advice.
Ingestion wash out the mouth thoroughly with water. If
irritation or discomfort persist seek immediate medical advice.
INCOMPATIBILITY
This is a combustible powder and should never be handled close
to heat or a naked flame. May react with oxidising materials.
Heating produces toxic fumes of nitrogen and chlorine compounds.
STORAGE
Store in a cool, dry atmosphere away from heat, naked flames and
oxidising materials.
HANDLING
Use a fume hood to keep the level of exposure to a minimum. Wear
protective clothing. A long sleeved laboratory coat or gown,
rubber gloves, safety goggles and a face mask as a minimum
standard.
DISPOSAL
WEAR:
Heavy leather gloves and safety glasses.
DISPOSAL:
Materials should be properly packed for safe handling and placed
in a prescribed site for daily collection. Burning can be done
in an open or closed incinerator equipped with an afterburner.
ENVIRONMENT:
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