Registration Dossier

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:
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:
reference to same study
Related information:
Composition 1
Reference:
Composition 0
Qualifier:
no guideline followed
Principles of method if other than guideline:
Visual inspection
GLP compliance:
yes (incl. certificate)
Test material information:
Composition 1
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:
2017
Report Date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method

Test material

Reference
Name:
Unnamed
Type:
Constituent
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.

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