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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

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:
2017
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

Constituent 1
Chemical structure
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.

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