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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:
15 December 2016
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
Within this study, the distribution of sizes of the particles within the sample has been studied using Microtrac-X100 equipment (laser diffraction).
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Key result
Percentile:
D10
Mean:
0.879 µm
Remarks on result:
other: SD not reported
Key result
Percentile:
D50
Mean:
2.24 µm
Remarks on result:
other: SD not reported
Key result
Percentile:
D90
Mean:
6.757 µm
Remarks on result:
other: SD not reported

MV (Mean diameter in microns of the “volume distribution”): 3.207 µm

MN (Mean diameter, in microns, of the “number distribution"): 0.946 µm

MA (Mean diameter, in microns, of the “area distribution”): 1.753 µm

CS - Calculated surface: 3.422 m2/cc

SD – Standard deviation: 2.392

Conclusions:
The median particle size (D50) was determined to be 2.240 µm, whereas the D10 and D90 were determined to be 0.879 and 6.757 µm, respectively. These values can be considered representative for the granular forms.

Description of key information

In an in-house study of MEL Chemicals (Klimisch 2), performed using Microtrac-X100 laser diffraction equipment, the median particle size of a representative sample was determined to be 2.240 µm, whereas the D10 and D90 were determined to be 0.879 and 6.757 µm, respectively.

Additional information