Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 215-234-0 | CAS number: 1314-37-0
Density
Administrative data
Link to relevant study record(s)
- 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)
- 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.
Reference
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.
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
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
