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Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
6 October 2017 to 25 October 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: Knudsen cell
Specific details on test material used for the study:
Black viscous liquid
Test no.:
#1
Temp.:
61 °C
Vapour pressure:
0.023 Pa
Test no.:
#2
Temp.:
71 °C
Vapour pressure:
0.033 Pa
Test no.:
#3
Temp.:
81 °C
Vapour pressure:
0.051 Pa
Test no.:
#4
Temp.:
91 °C
Vapour pressure:
0.07 Pa
Test no.:
#5
Temp.:
101 °C
Vapour pressure:
0.094 Pa
Test no.:
#6
Temp.:
111 °C
Vapour pressure:
0.12 Pa
Transition / decomposition:
yes
Remarks:
decomposition
Transition temp.:
>= 240 - <= 290 °C
Remarks on result:
other: decomposition

Results of the DSC-measurement

No.

Sample weight / mg

Start / °C

Energy / J/g

PN14499

6.31

240

150

Results of the Effusion method

No.

Temperature / °C

Vapour pressure / Pa

1

61

2.3 × 10-2

2

71

3.3 × 10-2

3

81

5.1 × 10-2

4

91

7.0 × 10-2

5

101

9.4 × 10-2

6

111

1.2 × 10-1
Conclusions:
The vapour pressure at 20°C is 0.0039 Pa
Executive summary:

Using a Knudsen cell, the vapour pressure of the substance was determined at 61 -111 °C. Based on the Antoine equation the vapour pressure at 20°C is calculated to be 0.0039 Pa.

Description of key information

Using a Knudsen cell, the vapour pressure of the substance was determined at 61 -111 °C. Based on the Antoine equation the vapour pressure at 20°C is calculated to be 0.0039 Pa.

Key value for chemical safety assessment

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

Additional information