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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:
2014-01-22
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Version / remarks:
1981
Deviations:
no
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
other: not specified
Type of distribution:
volumetric distribution
Key result
Percentile:
D50
Mean:
57.6 µm
Remarks on result:
other: SD not indicated
Percentile:
D10
Mean:
11.4 µm
Remarks on result:
other: SD not indicated
Percentile:
D90
Mean:
144.7 µm
Remarks on result:
other: SD not indicated

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: 


1st test series: L50 = 57.65 µm


2nd test series: L50 = 57.50 μm 


The average of the median particle size L50 was: L50 = 57.6 μm 


 


The particle size L10 (D (v, 0.1 ): 10 % of particle volume or particle mass with lower particle diameter) deduced from these distributions were: 


1st test series: L10 = 11.4 μm 


2nd test series: L10 = 11.31 μm 


The average of the particle size L10 was: L10 = 11.4 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: 


1st test series: L90 = 144.55 μm 


2nd test series: L90 = 144.93 μm 


The average of the particle size L90 was: L90 = 144.7 μm 


 


The percentage of particles with a particle size < 2 µm is approx. 1 % by mass of the total test item and the percentage of particles with a particle size > 200 µm is approx. 2 % by mass of the total test item. The measurement showed a shoulder at approximately 2-3 μm and a maximum at approx. 80 µm. 

Conclusions:
The median particle size L50 of the test item deduced from the particle size distributions was 57.6 μm.
Executive summary:

The determination of the particle size distribution by laser diffraction of the test item was performed according to the OECD Guideline 110 by laser diffraction. The median particle size L50 of the test item deduced from the particle size distributions was 57.6 μm. 

Description of key information

The median particle size L50 of the test item deduced from the particle size distributions was 57.6 μm. 

Additional information

The determination of the particle size distribution by laser diffraction of the test item was performed according to the OECD Guideline 110 by laser diffraction. The median particle size L50 of the test item deduced from the particle size distributions was 57.6 μm.