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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-06-26 to 2018-10-09
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
2006
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
2008
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Version / remarks:
1996
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: Knudsen cell
Key result
Temp.:
20 °C
Vapour pressure:
0 Pa
Key result
Temp.:
25 °C
Vapour pressure:
0 Pa
Key result
Temp.:
50 °C
Vapour pressure:
0 Pa
Vapour pressure:
0 Pa

Effusion method: Knudsen cell

The vapour pressure was measured in the temperature range of 138.9 °C to 150.9 °C. The measured vapour pressure values together with the measured temperatures are listed in the Table below:

No.

Temperature / °C

Vapour pressure / Pa

1

138.9

1.19 × E-02

2

141.9

1.52 ×  E-02

3

144.9

2.05 ×  E-02

4

147.9

2.61 ×  E-02

5

150.9

3.34 ×  E-02

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

Temperature / °C

Vapour pressure / Pa

20

3.7 × E-09

25

8.8 × E-09

50

4.6 × E-07

Conclusions:
The vapour pressure of the test item was calculated for the temperatures 20, 25 and 50 °C by extrapolation of the measured vapour pressure curve, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure and OECD Test Guideline 104 (2006). The vapour pressure at 20°C was 3.7E-09, at 25°C 8.8E-09 and at 50°C 4.6E-07 Pa.

Description of key information

The vapour pressure of the test item was calculated for the temperatures 20, 25 and 50 °C by extrapolation of the measured vapour pressure curve, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure and OECD Test Guideline 104 (2006). The vapour pressure at 20°C was 3.7E-09, at 25°C 8.8E-09 and at 50°C 4.6E-07 Pa.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information