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Diss Factsheets

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:
2017-05-11
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
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:
yes (incl. QA statement)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Remarks on result:
not measured/tested
Percentile:
D10
Mean:
32 µm
St. dev.:
0.91
Key result
Percentile:
D50
Mean:
176 µm
St. dev.:
2.54
Percentile:
D90
Mean:
447.8 µm
St. dev.:
6.5
Remarks on result:
not measured/tested

Results

 

Test series 1

Test series 2

Average

D10

32.6 µm

31.3 µm

32.0 µm

D50

177.8 µm

174.2 µm

176.0 µm

D90

452.4 µm

443.2 µm

447.8 µm
Conclusions:
The test item has a median particle size D50 = 176 µm, which was determined by laser diffraction measurement.
Executive summary:

A study was conducted according to OECD TG 110 and ISO 13320 to determine the particle size distribution of the test item. The particle size distribution was determined by using the laser diffraction method. Two test series of 3 measurements each were performed with the test item. The median particle size D50 of the test item was determined to be 176 µm.

Description of key information

The substance has a median particle size D50 = 176 µm, which was determined by laser diffraction measurement.

Additional information

A study was conducted according to OECD TG 110 and ISO 13320 to determine the particle size distribution of the test item. The particle size distribution was determined by using the laser diffraction method. Two test series of 3 measurements each were performed with the test item. The median particle size D50 of the test item was determined to be 176 µm (reference 4.5-1).