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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:
26 October 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Test material information:
Composition 1
Percentile:
D10
Mean:
26.9 µm
St. dev.:
1
Key result
Percentile:
D50
Mean:
138 µm
St. dev.:
1.6
Percentile:
D90
Mean:
362.1 µm
St. dev.:
0.4

Results

Before the measurements the agglomerates of the test item were to crush carefully. Two test series of 3 measurements each were performed with the test item.

 

Test series 1:

D10: 25.9 μm

D50: 136.4 μm (Median diameter)

D90: 361.7 μm

 

Test series 2:

D10: 27.9 μm

D50: 139.5 μm (Median diameter)

D90: 362.5 μm

 

Average

D10: 26.9 μm

D50: 138.0 μm (Median diameter)

D90: 362.1 μm

 

Final Results

The test item has a median particle size of D50= 138.0 μm, which was determined by laser diffraction measurement.

Conclusions:
A median particle size of D50 = 138.0 μm was determined for the test substance according to ISO 13320 (Laser diffraction methods).

Description of key information

Median particle size (D50) = 138.0 μm (ISO 13320, laser diffraction method)

Additional information