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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:
11 May 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions
Deviations:
no
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
adopted in 2009
Deviations:
no
Qualifier:
according to
Guideline:
other: CIPAC MT 187: Particle Size Anaylsis by Laser Diffraction
Deviations:
no
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
other: crystalline particles
Type of distribution:
volumetric distribution
Test material information:
Composition 1
Specific details on test material used for the study:
Storage conditions: ambient temperature (10 to 30 °C)
Percentile:
D50
Mean:
73.4 µm
St. dev.:
0.07
Remarks on result:
other:
Remarks:
Individual results: 73.5 µm, 73.4 µm
Percentile:
D10
Mean:
17.1 µm
St. dev.:
0.07
Remarks on result:
other:
Remarks:
Individual results: 17.1 µm, 17.0 µm
Percentile:
D90
Mean:
193.4 µm
St. dev.:
3.04
Remarks on result:
other:
Remarks:
Individual results: 195.5 µm, 191.2 µm
No.:
#1
Size:
< 1 µm
Distribution:
0 %
Remarks on result:
other: 2 test series
No.:
#1
Size:
< 10 µm
Distribution:
5.51 %
Remarks on result:
other: 2 test series distributions 5.54% and 5.47%

Results
Median values were calculated from unrounded values.

The median particle size L50(D (v, 0.5): 50% of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1sttest series L50= 73.5 µm; 2ndtest series L50= 73.4 µm
The average of the median particle size: L50= 73.4 µm

The particle size L10(D (v, 0.1): 105 of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1sttest series: L10= 17.1 µm; 2ndtest series: L10= 17.0 µm
The average of the particle size: L10= 17.1 µm

The particle size L90(D (v, 0.9): 90% of particle volume or particle mass with lower particle diameter) deduced from these distributions were:
1sttest series: L90= 195.5 µm; 2ndtest series: L90= 191.2 µm
The average of the particle size: L90= 193.4 µm

The particle size distribution showed a polymodal distribution. The maximum was seen at ca. 92 µm. Two shoulders were seen at approx. 3 µm and 10 µm.

 

Description of key information

D10: 17.1 µm
D50: 73.4 µm
D90: 193.4 µm

(OECD 110, Laser Diffraction/Scattering)

Additional information