Registration Dossier

Diss Factsheets

Physical & Chemical properties

Density

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 July 2017 to 22 August 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
9.152
Temp.:
21.9 °C
Remarks on result:
other: Mean value of two assays (assay No.1: 9.130, assay No.2: 9.173)

Two independent measurements at 21.8°C (assay No. 1) and 21.9°C (assay No. 2) were done. Runs 1, 2 and 3 of assay No. 1 and runs 1, 2, 3 and 4 of assay No. 2 were not taken into account because they did not comply with the quality criterion. A longer stabilisation time of the pressure was needed to obtain three consequent runs complying with the quality criterion.

The two assays resulted in relative densities of 9.130 ± 0.002 and 9.173 ± 0.008, respectively. The mean relative density was thus 9.152 ± 0.024 at 21.9°C.

Reference volume (Va) was 79.444 cm³.

Volume of sample cell holder (Vc) was 27.678 cm³.

Test item sample weight was 9.6940 g and 11.5520 g in assay No. 1 and 2, respectively.

The measurements are described in the table in the next section.

Conclusions:
The relative density of diytterbium trioxide was determined according to the EU A.3 method and OECD test guideline 109 in compliance with GLP using a gas comparison pycnometer. The relative density of the test item was determined to be 9.152 ± 0.024 at 21.9°C.

Description of key information

The relative density of diytterbium trioxide was determined in a GLP study (Klimisch 1, Demangel, 2017) according to the EU A.3 method and OECD test guideline 109 using a gas comparison pycnometer. The relative density of the test item was determined to be 9.152 ± 0.024 at 21.9°C. This value is considered as the key value for endpoint coverage.

Key value for chemical safety assessment

Relative density at 20C:
9.152

Additional information