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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:
20 June 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187: Particle Analysis by Laser Diffraction
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
agglomerate
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
Storage conditions: ambient temperature (10 – 30 °C), dry
Remarks on result:
not measured/tested
Percentile:
D10
Mean:
4.374 µm
St. dev.:
0.005
Remarks on result:
other: Individual results: 4.370 and 4.377 µm
Percentile:
D50
Mean:
12.85 µm
St. dev.:
0.339
Remarks on result:
other: Individual results: 12.61 and 13.09 µm
Percentile:
D90
Mean:
24.95 µm
St. dev.:
0.75
Remarks on result:
other: Individual results: 24.42 and 25.48 µm

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= 12.61 µm; 2ndtest series L50= 13.09 µm
The average of the median particle size: L50= 12.85 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= 4.370µm; 2ndtest series: L10= 4.377 µm
The average of the particle size: L10= 4.374 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= 24.42 µm; 2ndtest series: L90= 25.48 µm
The average of the particle size: L90= 24.95 µm

The particle size distribution showed a monomodal distribution. The maximum was seen at ca. 15 µm and a shoulder at ca. 2 µm.

Description of key information

D10: 4.37 µm
D50: 12.85 µm

D90: 24.95 µm

(OECD 110, Laser Diffraction/Scattering)

Additional information