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Properties of Hydrogen Cyanide

Synonyms

Hydro cyanic acid 

Prussic acid 

Formonitrile 

Formic anammonide 

Carbon hydride nitride 

Cyclone

 Physical Properties 

Colorless as a gas or pale blue as a liquid
Bitter almond odor
Burning Taste
Molar Mass = 27.03g/mol
Boiling point (at 760mmHg) = 26C or 79 F
Melting point = -13.4C or 7.88F
Density = 0.94g/cm3
Solubility: Miscible with water and alcohol, slightly soluble in ether.
Percent Composition by Mass: H= 3.74% C=44.44% N=51.82%
Percent Composition by Number =  H:C:N= 2:14:15, H:C=1:7, H:N=2:15, C:N=14:15

Chemical Properties

Reactive with amines, oxidizers, acids, sodium hydroxide, calcium hydroxide, sodium carbonate, caustics, and ammonia.
Water solutions of hydrogen cyanide cause stress-cracking of carbon steels under stress.
Water solutions of hydrogen cyanide containing sulfuric acid as a stabilizer corrode steel above 40C.
Poisonous even when mixed with only air
Toxic to all species in water
Toxic gases such as cyanide may be released in a fire involving hydrogen cyanide.
Unstable, and sensitive to heat, light, and moisture.
Structure
HCN, Linear

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    MR. BOGUE