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Physical & Chemical properties

Vapour pressure

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Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Principles of method if other than guideline:
The measured data were converted to a vapour pressure at 20°C using an Excell based calculation tool.
Calculated according Clausius Clapeyron equation from a measured vapour pressure diagram.
GLP compliance:
no
Type of method:
other: Calculated according Clausius Clapeyron equation from a measured vapour pressure diagram
Key result
Temp.:
20 °C
Vapour pressure:
0.24 hPa
Remarks on result:
other: Calculated according Clausius Clapeyron equation from a measured vapour pressure diagram

measured values from another study report:

pressure (Torr)       temp (°C)

10                            89

25                            105

50                            120.1

100                          137.9

200                          157.8

300                          170.8

400                          179.2

500                          187.8

600                          194.9

750                          204.1

Calculated vapor pressure at 20°C according to Clausius Clapeyron:

0.1781 Torr

0.24 hPa

Correlation coefficient: 0.9979

Conclusions:
A reliable measured vapour pressure calculated according Clausius Clapeyron equation (from a measured vapour pressure diagram) for the test substance is 0.24 hPa at 20 °C.
Executive summary:

A reliable measured vapour pressure calculated according Clausius Clapeyron equation (from a measured vapour pressure diagram) for the test substance is 0.24 hPa at 20 °C.

Correlation coefficient: 0.9979

Description of key information

A reliable measured vapour pressure calculated according Clausius Clapeyron equation (from a measured vapour pressure diagram) for the test substance is 0.24 hPa at 20 °C.

Key value for chemical safety assessment

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

Additional information

A reliable measured vapour pressure calculated according Clausius Clapeyron equation (from a measured vapour pressure diagram) for the test substance is 0.24 hPa at 20 °C.