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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:
June 27, 2017 - November 02, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: isothermal thermogravimetry
Specific details on test material used for the study:
- Analytical purity: 100% (UVCB)
- Purity test date: 06 June 2017
- Lot/batch No.: 180517GT41
- Expiration date of the lot/batch: 31 December 2017
- Appearance: Beige pasty solid
- Storage: At room temperature
Key result
Temp.:
20 °C
Vapour pressure:
0 Pa
Temp.:
25 °C
Vapour pressure:
0 Pa

Weight loss was observed from the start of the measurements up to 140°C. This was due to evaporation of volatile components (i.e. solvent, impurities).

The vapour pressure regression curve of the log PT of the test item as function of the reciprocal temperatures was: log PT = -6619 × 1/T + 16.19 (r = 0.998, n = 8).

Conclusions:
The vapour pressure of the test item was 4.1 x 10-7 Pa at 20°C and 9.9 x 10-7 Pa at 25°C.
Executive summary:

The vapour pressure of the test item was determined in a GLP-compliant study performed in accordance with EU A.4 Method and OECD Guideline No. 104, using the thermogravimetric effusion method. The vapour pressure of the test item was 4.1 x 10-7 Pa at 20°C and 9.9 x 10-7 Pa at 25°C.

Description of key information

The vapour pressure of the test item was determined in a GLP-compliant study performed in accordance with EU A.4 Method and OECD Guideline No. 104, using the thermogravimetric effusion method. The vapour pressure of the test item was 4.1 x 10-7 Pa at 20°C and 9.9 x 10-7 Pa at 25°C.

Key value for chemical safety assessment

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

Additional information

The vapour pressure of the test item was determined in one non-GLP study performed in accordance with standard methods, without deviations. The study is considered as reliable (Klimisch 1) and was selected as a key study for the endpoint.