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Vapour pressure

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Description of key information

Vapour pressure of 50.9 Pa at 20°C  is from a DVB high purity sample.
Different grades of DVB will give slightly different vapour pressure values.

Key value for chemical safety assessment

Vapour pressure:
50.9 Pa
at the temperature of:
293 K

Additional information

 Data of measured vapor pressure and temperature were regressed using the Antoine Equation, of the form:

Log P (mm Hg) = A - B/(T + C)

The derived Antoine constants, where P is in mm Hg and T in °C, were as follows:

A = 7.15806

B = 1765.27

C = 213.036

Vapor pressures at 20 and 25 °C determined from extrapolation of the above data below the lowest temperature at which vapor presssure was determined (79.19 °C).

 Temperature (°C)  Vapor Pressure (mm Hg)
 79.190  12.950
 90.325  22.251
 99.349  32.236
 106.012  42.098
 115.834  61.300
 123.398  81.211
 129.600  101.060
 150.322  200.428