Characteristics
These chemicals can cause serious injury or death at low concentrations. Highly toxics are chemicals with a lethal dose (LD50) of less than or equal to 50 milligrams per kilogram body weight or a lethal concentration (LC50) in air of less than or equal to 200 parts per million.
Laboratory Chemicals
Solids
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arsenic salts
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cadmium cyanide
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organic mercury compounds
Liquids
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acrolein
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hydrocyanic acid
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nicotine
Gases
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diborane
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fluorine
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nitrogen dioxide
Storage Precautions for Highly Toxics
Maintain the lowest possible quantities of highly toxics.
Segregate highly toxic chemicals from other hazard classes and store in an area that is cool, well ventilated, and away from light and heat.
Manage toxic gases, highly toxic gases, or pyrophoric gases in accordance with the campus Toxic, Corrosive and Pyrophoric (TCP)Gas Program requirements. Contact toxicgas@berkeley.edu for specifics.
Containers should be tightly sealed to minimize exposure to personnel and avoid contamination from other chemicals.