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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:
07 Aug 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Qualifier:
equivalent or similar to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
adopted in 2009
Qualifier:
according to
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Version / remarks:
adopted in 1996
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Specific details on test material used for the study:
Storage conditions: dry at ambient temperature (10 - 30 °C)
Percentile:
D10
Mean:
0.8 µm
Remarks on result:
other: St. dev. not reported
Percentile:
D50
Mean:
3.5 µm
Remarks on result:
other: St. dev. not reported
Percentile:
D90
Mean:
7.1 µm
Remarks on result:
other: St. dev. not reported

Results
Two test series of 3 measurements each were performed with the test item.

Test series 1

D10:     0.8 µm

D50:     3.5 µm (Median diameter)

D90:     7.1 µm

Test series 2

D10:     0.8 µm

D50:     3.5 µm (Median diameter)

D90:     7.1 µm

Average

D10:     0.8 µm

D50:     3.5 µm (Median diameter)

D90:     7.1 µm

Final Results
The test item has a median particle size D50 = 3.5 µm, which was determined by laser diffraction measurement according to OECD Test Guideline 110 (1981) and ISO 13320 (2009).

Description of key information

D10: 0.8 µm

D50: 3.5 µm

D90: 7.1 µm

(OECD 110, Laser Diffraction/Scattering)

Additional information