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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:
19 January 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)
Version / remarks:
1981
Qualifier:
according to
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Version / remarks:
1996
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
2009
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Percentile:
D10
Mean:
25.2 µm
St. dev.:
1
Key result
Percentile:
D50
Mean:
148.7 µm
St. dev.:
8
Percentile:
D90
Mean:
690.7 µm
St. dev.:
12.3

Particle Size Distribution

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

 

Test series 1:

D10: 24.2 μm

D50: 140.7 μm (Median diameter)

D90: 678.4 μm

 

Test series 2:

D10: 26.2 μm

D50: 156.7 μm (Median diameter)

D90: 703.0 μm

 

Average

D10: 25.2 μm

D50: 148.7 μm (Median diameter)

D90: 690.7 μm

 

Final Results

The test item has a median particle size of D50 = 148.7 μm, which was determined by laser diffraction measurement, according to OECD Guideline 110.

Conclusions:
A median particle size (D50) of 148.7 μm was determined for the test substance according to OECD Guideline 110.

Description of key information

Median particle size (D50) = 148.7 μm (OECD Guideline 110, laser diffraction method)

Additional information

The particle size distribution of test substance is also characterized by the following parameters:

D10 = 25.2 μm

D90 = 690.7 μm