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:
from 2017-10-17 to 2017-10-18
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: Knudsen cell
Key result
Temp.:
20 °C
Vapour pressure:
0 Pa
Temp.:
25 °C
Vapour pressure:
0 Pa

The vapour pressure was measured in the temperature range of 120 to 160 °C. For the evaluation the vapour pressure values in the range of 125 °C to 160 °C were used. The measured vapour pressure values together with the measured temperatures are listed in Table 1.

Table 1: Results of effusion method

Stage No.

Temperature

(°C)

Δm/Δt (mg/min) Vapour pressure (Pa)
1 125 2.9909E-05 9.8942E-3
2 130 4.5083E-05 1.5007E-2
3 135 4.2187E-05 1.4130E-2
4 140 6.5097E-05 2.1937E-2
5 145 1.1058E-04 3.7489E-2
6 150 2.0798E-04 7.0928E-2
7 155 7.4460E-04 2.5543E-1
8 160 1.7909E-03 6.1793E-1

E-x : *10-x

Conclusions:
The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 °C:
for 20 °C: 1.119E-10 Pa
for 25 °C: 3.467E-10 Pa
Executive summary:

A study was conducted according to OECD TG 104 and Regulation (EC) No. 440/2008 (REACH), method A.4 in order to determine the vapour pressure of the test item. The vapour pressure of the test item was determined at temperatures from 120 °C to 160 °C using the effusion method (Knudsen cell). For the evaluation the vapour pressure values in the range of 125 °C to 160 °C were used. The vapour pressures for 20 °C and 25 °C were calculated by extrapolation of the measured vapour pressure curve. The vapour pressure of the test item was determined to be 1.119 x 10-10 Pa at 20 °C and 3.467 x 10-10 Pa at 25 °C.

Description of key information

The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 °C:

for 20 °C: 1.119 x 10-10 Pa

for 25 °C: 3.467 x 10-10 Pa

Key value for chemical safety assessment

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

Additional information

A study was conducted according to OECD TG 104 and Regulation (EC) No. 440/2008 (REACH), method A.4 in order to determine the vapour pressure of the test item. The vapour pressure of the test item was determined at temperatures from 120 °C to 160 °C using the effusion method (Knudsen cell). For the evaluation the vapour pressure values in the range of 125 °C to 160 °C were used. The vapour pressures for 20 °C and 25 °C were calculated by extrapolation of the measured vapour pressure curve. The vapour pressure of the test item was determined to be 1.119 x 10-10 Pa at 20 °C and 3.467 x 10-10 Pa at 25 °C (reference 4.6-1).