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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:
from 2017-09-27 to 2017.10.05
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)
Deviations:
no
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
agglomerate
Type of distribution:
volumetric distribution
Key result
Percentile:
D50
Mean:
9.2 µm
Remarks on result:
other: no SD indicated
Key result
Percentile:
D10
Mean:
2.1 µm
Remarks on result:
other: no SD indicated
Key result
Percentile:
D90
Mean:
30.2 µm
Remarks on result:
other: no SD indicated

Test series 1


D10:         2.0 µm                                                             


D50:         9.3 µm  (Median diameter)                     


D90:         30.8 µm                                                           


 


Test series 2


D10:         2.2 µm                                                             


D50:         9.2 µm  (Median diameter)                     


D90:         29.6 µm                                                           


 


Average


D10:         2.1 µm                                                             


D50:         9.2 µm  (Median diameter)                     


D90:         30.2 µm                                                           


The particle size distribution showed a polymodal distribution. Maxima were observed at approximately 10 um and approximately 200 um and a Shoulder was observed at approximately 1 um.

Conclusions:
The D10, D50 and D90 percentile were determined as D10 = 2.1 µm, D50 = 9.2 µm and D90 = 30.2 µm, respectively.
Executive summary:

A study was conducted according to OECD Test Guideline 110  and ISO 13320 (2009). The D10, D50 and D90 percentile were determined by laser diffraction as D10 = 2.1 µm, D50 = 9.2 µm and D90 = 30.2 µm, respectively.

Description of key information

The D10, D50 and D90 percentile were determined as D10 = 2.1 µm, D50 = 9.2 µm and D90 = 30.2 µm, respectively (reference 4.5-1).

Additional information

A study was conducted according to OECD Test Guideline 110  and ISO 13320 (2009). The D10, D50 and D90 percentile were determined by laser diffraction as D10 = 2.1 µm, D50 = 9.2 µm and D90 = 30.2 µm, respectively.