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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Principles of method if other than guideline:
Twin ebulliometric method
GLP compliance:
no
Type of method:
other: Equivalent to ASTM E1719-95
Temp.:
25 °C
Vapour pressure:
22.8 hPa
Remarks on result:
other: Using the Antoine equation and these coefficients, the vapor pressure at 25 deg C was calculated to be 17.1 mmHg (22.8 hPa).

Temperature (C)   P (mmHg)  P (hPa)
34.247            27.657    36.876
40.033            38.378    51.171
48.392            59.023    78.697
54.693            79.247   105.663
59.744            99.175   132.223
76.734           195.374   260.499
87.649           291.198   388.264

Based on these data the coefficients for the Antoine Equation of Log P = A - B/(T+C) are A = 7.27619, B = 1468.20, C = 217.943 ( °C, mmHg).

Using the Antoine equation and these coefficients, the vapor pressure at 25 deg C was calculated to be 17.1 mmHg (22.8 hPa).

Conclusions:
Using the Antoine equation, the vapor pressure at 25 deg C was calculated from test data to be 17.1 mmHg (22.8 hPa).

Description of key information

Using the Antoine equation, the vapor pressure at 25 deg C was calculated from test data to be 17.1 mmHg (22.8 hPa).

Key value for chemical safety assessment

Vapour pressure:
2 280 Pa
at the temperature of:
298.15 K

Additional information