Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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:
2000-06-14 to 21
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
no
Type of method:
dynamic method
Key result
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
1.7 hPa
Test no.:
#2
Temp.:
50 °C
Vapour pressure:
7.4 hPa

Dynamic method 

The vapour pressure was measured in the temperature range of 77.5 °C to 185 °C.

 

Temperature [°C]

vapour pressure [hPa]

94.5

60.8

108.6

100.6

128.0

181.2

143.1

299.5

164.1

541.4

184.9

960.2

175.1

747.0

154.0

411.3

136.0

238.6

119.3

140.9

100.1

80.0

77.5

25.1

 

The values for 25 and 50 °C and for 1013 hPa are calculated, using the Antoine constants A, B and C as shown. The vapour pressure value for 25 °C was extrapolated to be 1.7 hPa. The vapour pressure value for 50 °C was extrapolated to be 7.4 hPa.

Conclusions:
The vapour pressure for 25 °C was determined to be 1.7 hPa.
Executive summary:

A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item using the dynamic method. A vapour pressure curve with 12 data points was measured over a pressure range between 77.5 to 185°C. From the measured data points of the vapour pressure curve the constants A, B and C of the Antoine equation was derived and the vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 25 and 50°C. The vapour pressure was determined to be1.7 hPa at 25°C, 7.4 hPa at 25°C respectively.

Description of key information

The vapour pressure at 25 °C was determined to be 1.7 hPa (reference 4.6 -1).

Key value for chemical safety assessment

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

Additional information

A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item using the dynamic method (reference 4.6 -1). A vapour pressure curve with 12 data points was measured over a pressure range between 77.5 to 185°C. From the measured data points of the vapour pressure curve the constants A, B and C of the Antoine equation was derived and the vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 25 and 50°C. The vapour pressure was determined to be1.7 hPa at 25°C, 7.4 hPa at 25°C respectively.