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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 234-764-3 | CAS number: 12032-20-1
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 13 September 2016 - 17 January 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- pycnometer method
- Key result
- Type:
- relative density
- Density:
- ca. 9.216
- Temp.:
- 21 °C
- Remarks on result:
- other: Mean value of two assays (assay No.1: 9.225, assay No.2: 9.207)
- Conclusions:
- The relative density of lutetium oxide was determined according to 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 9.216 ± 0.012 at 21.0°C.
Reference
Two independent measurements at 21.2°C (assay No. 1) and 20.7°C (assay No. 2) were done. Runs 1 and 2 of assay No. 2 were not taken into account because they did not comply with the quality criterion.
The two assays resulted in relative densities of 9.225 ± 0.008 and 9.207 ± 0.008, respectively. The mean relative density was thus 9.216 ± 0.012 at 21.0°C.
Reference volume (Va) was 79.250 cm3.
Volume of sample cell holder (Vc) was 27.636 cm3.
Test item sample weight was 12.1920 g and 12.2559 g in assay No. 1 and 2, respectively.
The measurements are described in the tables below.
Assay no. 1
| Data | P2 (PSIG) |
P3 (PSIG) |
VP (cm³) |
Density (g/cm³) |
Relative density |
Mean relative density |
Run No. 1 |
17.078 |
4.257 |
1.3224 |
9.2199 |
9.2201 |
9.225 ± 0.008
|
Run No. 2 |
17.078 |
4.257 |
1.3224 |
9.2199 |
9.2201 |
|
Run No. 3 |
17.085 |
4.259 |
1.3203 |
9.2346 |
9.2348 |
Assay no. 2
| Data | P2 (PSIG) |
P3 (PSIG) |
VP (cm³) |
Density (g/cm³) |
Relative density |
Mean relative density |
Run No. 3 |
17.106 |
4.263 |
1.3304 |
9.2122 |
9.2124 |
9.207 ± 0.008
|
Run No. 4 |
17.082 |
4.257 |
1.3306 |
9.2111 |
9.2113 |
|
Run No. 5 |
17.099 |
4.261 |
1.3325 |
9.1976 |
9.1979 |
Description of key information
In a GLP study (K1, Demangel, 2017) based on the OECD 109 guideline and the EC A.3 method, the relative density of the test item was determined to be 9.216 ± 0.012 at 21.0°C. This value is considered the key value for lutetium trioxide.
Key value for chemical safety assessment
- Relative density at 20C:
- 9.216
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.
