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:
18-Sep-2014 to 19-Sep-2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
GLP compliance:
no
Type of method:
effusion method: vapour pressure balance
Key result
Temp.:
20 °C
Vapour pressure:
0.18 Pa
Key result
Temp.:
25 °C
Vapour pressure:
0.35 Pa
Key result
Temp.:
50 °C
Vapour pressure:
6.8 Pa

Results

The vapour pressure was measured in the temperature range of 21 to 34 °C. The measured vapour pressure values together with the measured temperatures are listed in the table.

Results of the Effusion method

No.

Temperature / °C

Vapour pressure / Pa

1

21

2.20 x 10-1

2

23

2.65 x 10-1

3

25

3.33 x 10-1

4

27

4.30 x 10-1

5

29

5.75 x 10-1

6

32

8.54 x 10-1

7

34

1.10 x 100

 

Final results

The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C, according to Regulation EC 440/2008 Method A.4. Vapour Pressure, OECD Test Guideline No. 104 (2006), and OCSPP Test Guideline 830.7950 (1996).

Calculated vapour pressure values for 20, 25 and 50 °C

Temperature / °C

Vapour pressure / Pa

20

1.8 x 10-1

25

3.5 x 10-1

50

6.8 x 100

Conclusions:
Vapour pressure values of 0.18 Pa (at 20 °C), 0.35 Pa (at 25 °C) and 6.8 Pa (at 50 °C) were determined for the test substance according to E.U. Method A.4.

Description of key information

Vapour pressure: 0.35 Pa at 25 °C (EU Method A.4, effusion method: vapour pressure balance)

Key value for chemical safety assessment

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

Additional information