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Physical & Chemical properties

Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June - September 2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
- Storage conditions: Controlled room temperature (15-25°C, ≤70% relative humidity), protected from light and humidity (stored in a tightly closed container)
Mass median aerodynamic diameter:
20.5 µm
Key result
Percentile:
D10
Mean:
7.67 µm
Remarks on result:
other: standard deviation not given
Key result
Percentile:
D50
Mean:
15.7 µm
Remarks on result:
other: standard deviation not given
Key result
Percentile:
D90
Mean:
45.6 µm
Remarks on result:
other: standard deviation not given
No.:
#1
Size:
9.86 µm
Distribution:
21.7 %
No.:
#2
Size:
15.7 µm
Distribution:
50 %
Conclusions:
The D50 of the test item was determined to be 15.7 µm, the D10 was 7.67 µm and the D90 was 45.6 µm. The MMAD of the test item, for the relative density and the mean D50, was calculated to be 20.5 µm.
Executive summary:

The particle size distribution of the test item was determined by means of Laser Diffraction Analysis (ISO 13320) using the medium volume (wet) module (MVM). The D50 of the test item was determined to be 15.7 µm, the D10 was 7.67 µm and the D90 was 45.6 µm. The MMAD of the test item, for the relative density and the mean D50, was calculated to be 20.5 µm.

Description of key information

The particle size distribution of the test item was determined by means of Laser Diffraction Analysis (ISO 13320)using the medium volume (wet) module (MVM).The D50 of the test item was determined to be 15.7 µm, the D10 was 7.67 µm and the D90 was 45.6 µm. The MMAD of the test item, for the relative density and the mean D50, was calculated to be 20.5 µm.

Additional information