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Particle size distribution (Granulometry)

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Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
29 Nov 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP - guideline study
Qualifier:
according to
Guideline:
other: CIPAC MT187
GLP compliance:
yes (incl. certificate)
Remarks:
LUBW Landesanstalt für Umwelt, Messungen und Naturschutz Baden-Württemberg, Karlsruhe, Germany
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Mass median aerodynamic diameter:
>= 73.3 - <= 79 µm
Percentile:
D10
Mean:
9.82 µm
Remarks on result:
other: Two measurements done. St. dev. not possible to determined.
Percentile:
D50
Mean:
76.2 µm
Remarks on result:
other: Two measurements done. St. dev. not possible to determined.
Percentile:
D90
Mean:
350 µm
Remarks on result:
other: Two measurements done. St. dev. not possible to determined.
No.:
#1
Size:
< 10 µm
Distribution:
10.2 %

The results were obtained using 3.5 bar dispersing energy and a feed rate of 50 %.

Particle Size Distribution of Ammonium Niobium Oxalate

 

Measurement 1

Measurement 2

Mean

L10D (v,0.1):

9.79 µm

9.85 µm

9.82 µm

L50D (v,0.5):

79.0 µm

73.3 µm

76.2 µm

L90D (v,0.9):

363 µm

337 µm

350 µm

particle < 10 µm (v,%):

10.2 %

10.2 %

10.2 %

Description of key information

MMAD: 73.3 - 79.0 µm (mean MMAD 76.2 µm) (CIPAC MT187)

Additional information

The particle size distribution of the test item was determined by laser diffraction according to CIPAC method MT187.