ABC of Safety in the Biological Sciences



METHYL VIOLET (Colour Index No. 42535)
Tetramethyl pararosanilin (C23H26N3Cl) Pentamethyl pararosanilin (C24H28N3Cl) Hexamethyl pararosanilin (C25H30N3Cl) Dyes denoted methyl violet are composed of mixtures of tetra, penta and hexamethyl pararosanilin.

Dahlia B, Paris violet, pyoktaninum coeruleum.
Use a fume hood.
Avoid eye contact.
Avoid inhalation or ingestion of the powder.
Keep away from heat or naked flames.
Wash hands thoroughly after handling.
Greenish bronze crystals or crystalline powder. Combustible powder ­ do not handle close to heat or a naked flame. Triaminotriphenylmethane dye.
This dye is a potential carcinogen and very toxic when ingested or inhaled. It is an eye irritant. Inhalation or ingestion may cause nausea, ingestion may also cause vomiting and diarrhoea.
Skin ­ remove contaminated clothing then 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). Wash contaminated clothing before re­use.
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 immediate medical attention.
Ingestion ­ wash out the mouth thoroughly with water and seek immediate medical advice.
Combustible powder ­ keep away from heat or naked flames. Can react with oxidising materials. Heating produces toxic fumes of nitrogen compounds.
Store in a cool, dry atmosphere away from heat 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.


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