It has a distinct odour resembling bitter almonds, though not everyone is able to detect this, making the use of a gas detector in environments at risk of exposure to toxic forms of hydrogen cyanide of vital importance.
Hydrogen cyanide is released from natural processes, meaning exposure will occur at very low levels in many environments. Hydrogen cyanide is not used domestically but is released from several combustion processes, including smoke from cigarettes, house and other fires, or from car exhaust fumes.
Colourless and smells bitter almonds
Highly flammable
Extremely toxic at low concentrations
Liquid form below 78°F (25.6°C)
Short atmospheric lifespan
More about hydrogen cyanide
How to detect hydrogen cyanide
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