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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 2017
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
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Version / remarks:
1996
Deviations:
no
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
2009
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Key result
Percentile:
D50
Mean:
368.7 µm
Remarks on result:
other: Standard deviation not reported
Key result
Percentile:
D10
Mean:
106.3 µm
Remarks on result:
other: Standard deviation not reported
Key result
Percentile:
D90
Mean:
829.1 µm
Remarks on result:
other: Standard deviation not reported

Two test series of three measurements each were performed with the test material.

Table 1: Summary of results

 

Test series 1 (µm)

Test series 2 (µm)

Average (µm)

D10

107.4

105.2

106.3

D50

372.0

365.4

368.7

D90

841.5

816.7

829.1
Conclusions:
Under the conditions of this study the test material has a median particle size D50 = 369 µm.
Executive summary:

The particle size distribution of the test material was investigated in accordance with the standardised guidelines OECD 110, EPA OCSPP 830.7520 and ISO 13320, under GLP conditions.

The particle size of the sample was measured by laser diffraction. Two test series of three measurements each were performed with the test material.

Under the conditions of this study the test material has a median particle size D50 = 369 µm. D10 = 106 µm and D90 = 829 µm.

Description of key information

Under the conditions of this study the test material has a median particle size D50 = 369 µm.

Additional information

The particle size distribution of the test material was investigated in accordance with the standardised guidelines OECD 110, EPA OCSPP 830.7520 and ISO 13320, under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

The particle size of the sample was measured by laser diffraction. Two test series of three measurements each were performed with the test material.

Under the conditions of this study the test material has a median particle size D50 = 369 µm. D10 = 106 µm and D90 = 829 µm.