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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:
Nov 2017 - Feb 2018
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)
Qualifier:
according to guideline
Guideline:
other: CIPAC MT 187 “Particle Size Analysis by Laser Diffraction”, Handbook K, 2007
GLP compliance:
yes
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Mass median aerodynamic diameter:
ca. 0.41 µm
Geometric standard deviation:
ca. 0.037
Key result
Percentile:
D10
Mean:
ca. 0.099 µm
St. dev.:
0.4
Key result
Percentile:
D50
Mean:
ca. 0.41 µm
St. dev.:
1.7
Key result
Percentile:
D90
Mean:
ca. 89.473 µm
St. dev.:
2.1

Full Test Results

RUN 1       RUN 2       RUN 3       RUN 4       RUN 5       Average**

Volume weighted mean        22.037       21.898        21.859        20.719      21.189        21.540

Median                                0.404          0.410        0.423        0.408        0.404        0.410

Mode                                   0.202         0.203        0.205        0.203        0.202        0.203

MMAD *                             0.457        0.464        0.478        0.461        0.457        0.463

d10 - 10 % of material is <   0.099        0.099        0.100        0.099        0.099        0.099

d50 - 50 % of material is < 0.404        0.410        0.423        0.408        0.404        0.410

d90 - 90 % of material is < 91.115      91.203     90.422     86.177      88.491     89.473

All results are in μm

* Mass median aerodynamic diameter

** Average result is calculated from the entirety of data captured in each run and is not a simple arithmetic mean.

75.59 % by volume of sample was seen to be < 10.00 μm.

Conclusions:
Full Test Results
RUN 1       RUN 2       RUN 3       RUN 4       RUN 5       Average**
d10 - 10 % of material is <  0.099        0.099        0.100        0.099        0.099        0.099
d50 - 50 % of material is < 0.404        0.410        0.423        0.408        0.404        0.410
d90 - 90 % of material is < 91.115      91.203     90.422     86.177      88.491     89.473


All results are in μm
* Mass median aerodynamic diameter
** Average result is calculated from the entirety of data captured in each run and is not a simple arithmetic mean.
75.59 % by volume of sample was seen to be < 10.00 μm.

Description of key information

Full Test Results

             RUN 1       RUN 2       RUN 3       RUN 4       RUN 5       Average**

d10 - 10 % of material is <  0.099        0.099        0.100        0.099        0.099        0.099

d50 - 50 % of material is <  0.404        0.410        0.423        0.408        0.404        0.410

d90 - 90 % of material is <  91.115      91.203     90.422     86.177      88.491       89.473

All results are in μm

* Mass median aerodynamic diameter

** Average result is calculated from the entirety of data captured in each run and is not a simple arithmetic mean.

75.59 % by volume of sample was seen to be < 10.00 μm.

Additional information