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Physical & Chemical properties

Particle size distribution (Granulometry)

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Link to relevant study record(s)

Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2012-09-06
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Version / remarks:
, 1981
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Version / remarks:
, 1996
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ISO 13320: Particle size analysis – Laser diffraction methods
Deviations:
no
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Percentile:
D50
Mean:
7 µm
Remarks on result:
other: mean of six measurements(migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)
Percentile:
D10
Mean:
0.92 µm
St. dev.:
0.02
Remarks on result:
other: mean of six measurements
Percentile:
D50
Mean:
7.43 µm
St. dev.:
0.38
Remarks on result:
other: mean of six measurements
Percentile:
D90
Mean:
54.06 µm
St. dev.:
11.5
Remarks on result:
other: mean of six measurements
Two test series of three measurements each were performed with the fine fraction of the test item Test series 1:               
 L10 0.90 µm
 L50 7.16 µm     (Median diameter)       
 L90 45.93 µm
Test series 2:
L10 0.93 µm
L50 7.70 µm  (Median diameter)
L90 62.19 µm
Average:
L10 0.92 µm 
L50 7.43 µm      (Median diameter)
L90 54.06 µm 
Conclusions:
The test item has a median particle size L50 = 7 µm, which was determined by laser diffraction measurement.

Description of key information

Zirconium propionate has a median particle size L50 = 7 µm, which was determined by laser diffraction measurement.

Additional information