Registration Dossier

Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2004
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2004
Report Date:
2004

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: EUROPEAN COMMISSION, Directorate General XII-JRC, Science Research and Development-Joint Research Centre. “Particle Size Distribution, Fibre Length and Diameter Distribution” Guidance Document, ECB/TM/February 1996.
GLP compliance:
yes (incl. certificate)
Type of method:
other: the laser scattering/ diffraction method combined with sieving
Type of distribution:
other: size distribution measurement using the laser diffraction,

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Results and discussion

Mass median aerodynamic diameter:
ca. 271 µm
Geometric standard deviation:
ca. 0
Particle sizeopen allclose all
Percentile:
D50
Mean:
ca. 271 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D50
Mean:
ca. 271 µm
St. dev.:
0
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
<= 271.02 µm
Distribution:
ca. 50 %
No.:
#2
Size:
<= 271.02 µm
Distribution:
ca. 50 %
No.:
#3
Size:
<= 271.02 µm
Distribution:
ca. 50 %
No.:
#4
Size:
<= 271.02 µm
Distribution:
ca. 50 %

Applicant's summary and conclusion

Conclusions:
The particle size distribution of ucb 22060 has been determined by sieving and laser
diffraction analysis. The mass median diameter (MD) was determined to be
271.0 pm.
The particle size distribution was found to range from approximately 0.3 pm to 2000 pm.