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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26./27.06.2003
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
67/548/EEC
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
67/548/EEC
Deviations:
no
GLP compliance:
yes
Type of method:
dynamic method
Key result
Temp.:
20 °C
Vapour pressure:
0.026 hPa
Key result
Temp.:
25 °C
Vapour pressure:
0.047 hPa
Key result
Temp.:
50 °C
Vapour pressure:
0.56 hPa

Vapour Pressure (Dynamic Method)

The vapour pressure was measured in the temperature range of 92 °C to 225 °C.

Temperature / °C Vapour Pressure / hPa
92.4 10.1
99.5 15.1
105.7 20.8
113.2 30.8
120.1 40.4
124.5 50.2
133.9 71.0
143.4 100.8
163.9 200.8
171.3 250.4
195.9 500.6
212.1 749.1
224.6 1000.8
Conclusions:
The vapour pressure at 20, 25 and 50 °C was determined to be 2.6E-2, 4.7E-2 and 5.6E-1 hPa respectively.
Executive summary:

A study was conducted according to OECD Guideline 104, Directive 67/548EEC method A.4 to determine the vapour pressure of the test item. The vapour pressure is measured by determining the boiling point of the lest item at various specified pressures between roughly 10 and 1000 hPa. A steady temperature under constant pressure indicates that the boiling point (boiling equilibrium in case of a mixture) has been reached.

The vapour pressure at 20, 25 and 50 °C was determined to be 2.6E-2, 4.7E-2 and 5-6E.1 hPa respectively.

Description of key information

The vapour pressure at 20, 25 and 50 °C was determined to be 2.6E-2, 4.7E-2 and 5-6E.1 hPa respectively.

Key value for chemical safety assessment

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

Additional information

A study was conducted according to OECD Guideline 104, Directive 67/548EEC method A.4 to determine the vapour pressure of the test item. The vapour pressure is measured by determining the boiling point of the lest item at various specified pressures between roughly 10 and 1000 hPa. A steady temperature under constant pressure indicates that the boiling point (boiling equilibrium in case of a mixture) has been reached.

The vapour pressure at 20, 25 and 50 °C was determined to be 2.6E-2, 4.7E-2 and 5-6E.1 hPa respectively.