Registration Dossier

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-01-18
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Comparable to guideline study with acceptable restrictions (e.g. non-GLP)
Qualifier:
according to guideline
Guideline:
other: DIN-EN 13016-2
GLP compliance:
no
Other quality assurance:
other: The laboratory complied with a quality management system according to DIN EN ISO 9001 : 2008 and DIN EN ISO 14001 : 2005
Type of method:
static method
Remarks:
MiniVap (Fa. Grabner-Instruments)
Key result
Temp.:
20 °C
Vapour pressure:
102 hPa

The following regression equation was derived:

y = -1748.7x + 7.9763, R^2 = 0.9999

y: log P [hPa]

x: 1/T [°K]

This yields for 20°C a vapour pressure of 102 hPa.

The regression was based on the following experimental data:

Temperature Vapour pressure [hPa]
20 °C 102
25 °C 128
30 °C 161
35 °C 200
40 °C 247
45 °C 303
50 °C 369
55 °C 447
60 °C 539
65 °C 643
70 °C 764
75 °C 902
80 °C 1059
85 °C 1239
90 °C 1443
95 °C 1670
Conclusions:
Vapour pressure (DIN-EN 13016-2): 102 hPa at 20°C
Executive summary:

The vapour pressure was determined following the static method according to guideline DIN-EN 13016-2 using the "MiniVap" device (Co. Grabner-Instruments).

The vapour pressure was determined to be 102 hPa at 20°C. The value is based on 16 measurements within the temperature range of 20 °C to 95 °C.

The laboratory complied with a quality management system according to DIN EN ISO 9001 : 2008 and DIN EN ISO 14001 : 2005.

Description of key information

Vapour pressure (DIN-EN 13016-2):

102 hPa at 20 °C
128 hPa at 25 °C

Key value for chemical safety assessment

Vapour pressure:
102 hPa
at the temperature of:
293 K

Additional information

In the valid key study (OXEA, 2009) the vapour pressure was determined following the static method according to guideline DIN-EN 13016-2 using the "MiniVap" device (Co. Grabner-Instruments).

The vapour pressure was determined to be 102 hPa at 20°C. The value is based on 16 measurements within the temperature range of 20 °C to 95 °C.

The laboratory complied with a quality management system according to DIN EN ISO 9001 : 2008 and DIN EN ISO 14001 : 2005.

The following supporting studies corroborate this result:

BASF (1973): Vapour pressure (static method): 93.3 hPa at 20°C

BASF (1997): Vapour pressure (static method): 99.8 hPa at 20°C (extrapolated from temperatures >= 40°C via Antoine equation)