Hydrogen cyanide

CAS RN: 74-90-8

Property Summary

Autoignition Temperature:
    1000 deg F (538 deg C)

Boiling Point:
    25.63 deg C

Density Specific Gravity:
    0.6875 g/cu cm at 20 deg C

Flash Point:
    0 deg F (-18 deg C) (Closed cup)

Melting Point:
    -13.28 deg C

Molecular Formula:

Molecular Weight:

    Very weak acid (does not redden litmus)

    Miscible with water
    Miscible with ethanol, ethyl ether
    Miscible with alcohol; slightly soluble in ether

Vapor Density:
    0.932 (Air = 1)

Vapor Pressure:
    742 mm Hg at 25 deg C

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