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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)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes
Type of method:
dynamic method
Key result
Test no.:
#2
Temp.:
25 °C
Vapour pressure:
0.8 hPa
Remarks on result:
other: calculated based on the Antoine equation
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
0.5 hPa
Remarks on result:
other: calculated based on the Antoine equation
Test no.:
#3
Temp.:
50 °C
Vapour pressure:
4.2 hPa
Remarks on result:
other: calculated based on the Antoine equation
Test no.:
#4
Temp.:
56 °C
Vapour pressure:
6.1 hPa
Remarks on result:
other: calculated based on the Antoine equation
Test no.:
#5
Temp.:
185 °C
Vapour pressure:
1 062.4 hPa
Remarks on result:
other: calculated based on the Antoine equation

The data have been obtained by using the Antoine-Equation. The following Antoine coefficient A and B were obtained: 8.0187 (A); 2071.7 (B)

Conclusions:
The vapour pressure was calculated to be 0.8 hPa at 25 °C.
Executive summary:

The dynamic method was used to determine the vapour pressure at 25 °C which conforms with the procedure 'Test method A.4', described in the ECGuideline. Using the Antoine coefficients of the regression straight line the vapor pressure was calculated to be 0.8 hPa at 25 °C.

Description of key information

Using the Antoine coefficients of the regression straight line the vapor pressure was calculated to be 0.8 hPa at 25 °C.

Key value for chemical safety assessment

Vapour pressure:
0.8 hPa
at the temperature of:
25 °C

Additional information

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