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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
other: BS ISO 13320-1:1999
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
counted distribution
Mass median aerodynamic diameter:
84.3 µm
Geometric standard deviation:
ca. 0.5
Key result
Percentile:
D50
Mean:
68 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Key result
Percentile:
D10
Mean:
22.925 µm
St. dev.:
1.2
Key result
Percentile:
D50
Mean:
67.953 µm
St. dev.:
0.36
Key result
Percentile:
D90
Mean:
140.872 µm
St. dev.:
1.06

Results:

   1  2  3  4  5  Average  Stdev  %CV
 d10  23.392  22.988  22.928  22.715  22.591  22.925  0.27  1.2
 d50  68.329  67.579  68.035  67.875  67.951  67.953  0.24  0.36
 d90  141.786  138.193  142.620  140.663  141.241  140.872  1.5  1.06
 GSD  2.169  2.170  2.185  2.191  2.200  -  -  -
 MMAD  84 .794  83.863  84.429  84.231  84.325  84.327  0.5  -

GSD = Geometric standard deviation

MMAD = Mass Median Aerodynamic diameter

Executive summary:

The particle size distribution of sodium toluenesulfonate was measured by laser diffraction according to ISO 13320. The mass median diameter was 84.3 µm, the particle size percentile D50 = 68 µm (mean) +/- 0.36.

Description of key information

d50 = 68 µm

Additional information