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EC number: 237-257-5 | CAS number: 13709-49-4
Density
Administrative data
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16 February 2017 - 20 June 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- appearance / physical state / colour
- Type of information:
- other: Visual inspection
- Adequacy of study:
- weight of evidence
- Study period:
- 16 February 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Information taken from a GLP-compliant study report on relative density in which the appearance and physical state of the test item was described based on visual inspection.
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Visual inspection
- GLP compliance:
- yes (incl. QA statement)
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- solid: particulate/powder
- Colour:
- white
- Substance type:
- inorganic
- Conclusions:
- Yttrium trifluoride is concluded to be a white powder under ambient conditions.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- 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
Test material
- Reference substance name:
- Yttrium trifluoride
- EC Number:
- 237-257-5
- EC Name:
- Yttrium trifluoride
- Cas Number:
- 13709-49-4
- Molecular formula:
- YF3
- IUPAC Name:
- yttrium trifluoride
- Test material form:
- solid: particulate/powder
- Details on test material:
- - Name of test material (as cited in study report): yttrium trifluoride
- Physical state: solid
- Appearance: white powder
- Further information on test material confidential.
Constituent 1
Results and discussion
Density
- Key result
- Type:
- relative density
- Density:
- ca. 4.767
- Temp.:
- 20.4 °C
- Remarks on result:
- other: Mean value of two assays (assay No.3: 4.769 ± 0.005, assay No.4: 4.764 ± 0.004).
Any other information on results incl. tables
The assays No. 1 and 2 were not taken into account since the difference of results between these assays was relatively significant. The apparatus was then calibrated and 2 other assays were performed.
Two independent measurements at 20.5°C (assay No. 3) and 20.3°C (assay No. 4) were done. Run 1 of assay No. 3 and runs 1 and 2 of assay No. 4 were not taken into account because they did not comply with the quality criterion.
The two assays resulted in relative densities of 4.769 +/- 0.005 and 4.764 +/- 0.004, respectively. The mean relative density was thus 4.767 +/- 0.005 at 20.4°C.
Reference volume (Va) was 79.444 cm3.
Volume of sample cell holder (Vc) was 27.678 cm3.
Test item sample weight was 5.7598 g and 6.5610 g in assay No. 3 and 4, respectively.
The measurements are described in the tables below.
Assay No. 3:
| Data | P2 (PSIG) | P3 (PSIG) | VP (cm³) | Density (g/cm³) | Relative density | Mean relative density |
| Run No. 2 | 17.037 | 4.258 | 1.2070 | 4.7719 | 4.7720 | 4.769 ± 0.005 |
| Run No. 3 | 17.017 | 4.253 | 1.2070 | 4.7718 | 4.7720 | |
Run No. 4 |
17.046 | 4.260 | 1.2091 | 4.7637 | 4.7639 |
Assay No. 4:
| Data | P2(PSIG) | P3(PSIG) | VP(cm³) | Density (g/cm³) | Relative density | Mean relative density |
| Run No. 3 | 17.011 | 4.231 | 1.3769 | 4.7649 | 4.7650 | 4.764 ± 0.004 |
| Run No. 4 | 17.060 | 4.243 | 1.3785 | 4.7596 | 4.7597 | |
Run No. 5 |
17.091 | 4.251 | 1.3761 | 4.7678 | 4.7680 |
Applicant's summary and conclusion
- Conclusions:
- The mean relative density of yttrium trifluoride 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 4.767 ± 0.005 at 20.4 °C
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