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Physical & Chemical properties

Particle size distribution (Granulometry)

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Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2 May 2014
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2014
Report Date:
2014

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
not specified
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

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): ZrB2 RTPP sprühgetrocknet ex HTK8
- Batch number: ZrB2 - 1.1/14
- Molecular formula (if other than submission substance): ZrB2
- Appearance: granulate form

Results and discussion

Particle sizeopen allclose all
Key result
Percentile:
D10
Mean:
20.26 µm
Remarks on result:
other: SD not reported
Key result
Percentile:
D50
Mean:
45.36 µm
Remarks on result:
other: SD not reported
Key result
Percentile:
D90
Mean:
81.27 µm
Remarks on result:
other: SD not reported

Any other information on results incl. tables

MV (Mean diameter in microns of the “volume distribution”): 48.94 µm

MN (Mean diameter, in microns, of the “number distribution"): 19.67 µm

MA (Mean diameter, in microns, of the “area distribution”): 36.70 µm

CS - Calculated surface: 0.163 m2/cc

SD – Standard deviation: 23.78

Applicant's summary and conclusion

Conclusions:
The median particle size (D50) was determined to be 45.36 µm, whereas the D10 and D90 were determined to be 20.26 and 81.27 µm, respectively. These values can be considered representative for the granular forms.