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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2018-11-21 to 2018-11-22
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:
effusion method: Knudsen cell
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
0 Pa
Key result
Test no.:
#2
Temp.:
25 °C
Vapour pressure:
0 Pa
Test no.:
#3
Temp.:
50 °C
Vapour pressure:
0 Pa

Measured vapour pressures and corresponding temperatures

Temperature / °C

Vapour pressure / hPa

80

n.e.

90

9.9 x 10-5

100

3.2 x 10-4

110

8.8 x 10-4

120

2.3 x 10-3

I 100

3.6 x 10-4

n.e.: not evaluable

 

From the measured data the parameters A, B and C of the Antoine equation can be derived by regression. 

Antoine parameters 

A: 13.64319

B: -6396.80

C: 273.15  

The following vapour pressure values for the test item were extrapolated from the experimental data (vapour pressure: effusion method):

 

T/°C

p/hPa

p/Pa

20

6.6 x 10-9

6.6 x 10-7

25

1.5 x 10-8

1.5 x 10-6

50

7.1 x 10-7

7.1 x 10-5

 

 

Conclusions:
The vapour pressure of the test item was determined to be 6.6E-7 Pa at 20 °C, 1.5E-6 Pa at 25 °C and 7.1E-5 Pa at 50 °C, respectively.
Executive summary:

A study was conducted according to OECD TG 104 and Regulation (EC) No 440/2008 method A.4 to determine the vapour pressure of the test item using the effusion method: vapour pressure balance. The vapour pressure of the test item was determined at temperatures between 50 and 120 °C. Using the Antoine equation, the constants A and B were determined and the vapour pressure of the test item at 20, 25 and 50 °C was extrapolated from the experimental vapour pressure. The vapour pressure of the test item was determined to be 6.6E-7 Pa at 20 °C, 1.5E-6 Pa at 25 °C and 7.1E-5 Pa at 50 °C, respectively.

Description of key information

The vapour pressure of the test item was determined to be 6.6E-7 Pa at 20 °C, 1.5E-6 Pa at 25 °C and 7.1E-5 Pa at 50 °C, respectively.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
25 °C

Additional information

A study was conducted according to OECD TG 104 and Regulation (EC) No 440/2008 method A.4 to determine the vapour pressure of the test item using the effusion method: vapour pressure balance (reference 4.6 -1). The vapour pressure of the test item was determined at temperatures between 50 and 120 °C. Using the Antoine equation, the constants A and B were determined and the vapour pressure of the test item at 20, 25 and 50 °C was extrapolated from the experimental vapour pressure. The vapour pressure of the test item was determined to be 6.6E-7 Pa at 20 °C, 1.5E-6 Pa at 25 °C and 7.1E-5 Pa at 50 °C, respectively.