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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
from 2017-10-20 to 2017-10-21
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:
yes (incl. QA statement)
Type of method:
effusion method: Knudsen cell
Key result
Temp.:
20 °C
Vapour pressure:
0.083 Pa
Temp.:
25 °C
Vapour pressure:
0.152 Pa

The vapour pressure was measured in the temperature range of 30 to 70 °C. For the evaluation the vapour pressure values in the range of 30 to 65 °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 30.0 1.3653 x 10-3 3.0228 x 10-1
2 35.0 1.9898 x 10-3 4.4419 x 10-1
3 40.0 3.4503 x 10-3 7.7645 x 10-1
4 45.0 5.8187 x 10-3 1.3199
5 50.0 1.0459 x 10-2 2.3910
6 55.0 1.7395 x 10-2 4.0073
7 60.0 2.9622 x 10-2 6.8757
8 65.1 3.9452 x 10-2 9.2265
Conclusions:
The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 and 25 °C:
Vapour pressure at 20 °C: 8.338E-2 Pa
Vapour pressure at 25 °C: 1.522E-1 Pa
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. The vapour pressure of the test item was determined at temperatures from 30 to 70 °C using the effusion method (Knudsen cell). For the evaluation the vapour pressure values in the range of 30 to 65 °C were used. The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 and 25 °C. The vapour pressure was 8.338 x 10-2 Pa at 20 °C and 1.522 x 10-1 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 and 25 °C:

Vapour pressure at 20 °C: 8.338 x 10-2 Pa

Vapour pressure at 25 °C: 1.522 x 10-1 Pa

Key value for chemical safety assessment

Vapour pressure:
0.083 Pa
at the temperature of:
20 °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. The vapour pressure of the test item was determined at temperatures from 30 to 70 °C using the effusino method (Knudsen cell). For the evaluation the vapour pressure values in the range of 30 to 65 °C were used. The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 and 25 °C. The vapour pressure was 8.338 x 10-2 Pa at 20 °C and 1.522 x 10-1 Pa at 25 °C (reference 4.6-1).