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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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: vapour pressure balance
Temp.:
20 °C
Vapour pressure:
0 hPa
Remarks on result:
other: Extrapolated value
Temp.:
25 °C
Vapour pressure:
0 hPa
Remarks on result:
other: Extrapolated value
Temp.:
50 °C
Vapour pressure:
0 hPa
Remarks on result:
other: Extrapolated value

The measured vapour pressures at the corresponding temperatures are listed in the following table:

Temperature / °C

Vapour pressure / hPa

63.0

1.5E-05

67.2

3.3E-05

73.5

6.2E-05

79.1

9.9E-05

85.0

1.0E-04

90.5

2.8E-04

97.3

4.6E-04

102.3

6.4E-04

108.8

9.0E-04

114.5

1.3E-03

124.8

2.3E-03

133.2

3.5E-03

Description of key information

2.3E-07 hPa (20 °C) (EU A.4, effusion method, regression curve)

Key value for chemical safety assessment

Vapour pressure:
0 hPa
at the temperature of:
20 °C

Additional information

The vapour pressure was extrapolated to be 2.3E-07 hPa at 20 °C. Actual vapour pressure of 1.5 x 10E-05 hPa could be measured at 63 °C.

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