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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:
06 Aug 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
Qualifier:
according to guideline
Guideline:
other: ISO 13320:2009: Particle Size Analysis - Laser Diffraction Methods
GLP compliance:
no
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: ambient temperature (10 – 30 °C)
Percentile:
D10
Mean:
83.1 µm
St. dev.:
0.35
Remarks on result:
other: Individual test results: 82.9 µm and 83.4 µm
Percentile:
D50
Mean:
309 µm
St. dev.:
1.91
Remarks on result:
other: Individual test results: 307.6 µm and 310.3 µm
Percentile:
D90
Mean:
623.4 µm
St. dev.:
4.6
Remarks on result:
other: Individual test results. 620.1 µm and 626.6 µm
No.:
#1
Size:
< 1 µm
Distribution:
0 %
Remarks on result:
other: 2 test series

Results
Laser diffraction
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= 307.6 µm; 2ndtest series L50= 310.3 µm
The average of the median particle size: L50= 309.0 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= 82.9 µm; 2ndtest series: L10= 83.4 µm
The average of the particle size: L10= 83.1 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= 620.1 µm; 2ndtest series: L90= 626.6 µm
The average of the particle size: L90= 623.4 µm

The particle size distribution showed a monomodal distribution. The maximum was seen at ca. 350 µm and two shoulders at ca. 8 µm and 70 µm.

Description of key information

D10: 83.1 µm
D50: 309.0 µm
D90: 623.4 µm

(Laser Diffraction/Scattering)

Additional information

The particle size distribution showed a monomodal distribution. The maximum was observed at approximately 350 µm and two shoulders at 8 µm and approximately 70 µm.