ABC of Safety in the Biological Sciences
METHYL GREEN (Colour Index No. 42585) (C26H33N3Cl2)
Double green SF, light green, ethyl green.
Avoid eye contact.
Combustible keep away from heat or naked flames.
Keep away from oxidising agents.
Wash hands thoroughly after handling.
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.
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.
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.
Store in a cool, dry atmosphere away from heat, naked flames and oxidising materials.
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.
Heavy leather gloves and safety glasses.
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.