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Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-08-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

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:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Version / remarks:
1981
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
2009
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187
Version / remarks:
2009
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
2017-02-28
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Reference substance name:
Cesium fluoroaluminate
EC Number:
604-086-6
Cas Number:
138577-01-2
IUPAC Name:
Cesium fluoroaluminate
Test material form:
solid: particulate/powder
Details on test material:
- State of aggregation: solid, white powder
Specific details on test material used for the study:
- Storage conditions: Ambient temperature, dry, tightly closed in original container

Results and discussion

Remarks on result:
not measured/tested
Particle sizeopen allclose all
Percentile:
D10
Mean:
0.8 µm
St. dev.:
0
Percentile:
D50
Mean:
4.95 µm
St. dev.:
0.21
Percentile:
D90
Mean:
12.05 µm
St. dev.:
0.49
Particle size distribution at different passages
Remarks on result:
not measured/tested

Any other information on results incl. tables

Two test series of 3 measurements each were performed with the test item.

Test series 1:

D10:       0.8 µm

D50:      5.1 µm         (Median diameter)

D90:      12.4 µm

Test series 2:

D10:      0.8 µm

D50:      4.8 µm         (Median diameter)

D90:      11.7 µm

Average

D10:      0.8 µm

D50:      5.0 µm         (Median diameter)

D90:      12.1 µm

Final Results

The test item cesium tetrafluoroaluminate has a median particle size D50 = 5 µm, which was determined by laser diffraction measurement in accordance to inter alia ISO 13320 (2009) and CIPAC MT 187 (2009) method.

Applicant's summary and conclusion

Conclusions:
The test item cesium fluoroaluminate has following particle size distribution, which was determined by laser diffraction measurement in accordance to inter alia ISO 13320 (2009):
D10: 0.8 µm
D50: 5.0 µm (Median diameter)
D90: 12.1 µm

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