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
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2008
Report Date:
2008

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
SEM measurement: 80 particles were measured for thickness and 266 particles for the diameter; length of all 346 particles was measured.
GLP compliance:
no
Type of distribution:
counted distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
ca. 5.8 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D50
Mean:
> 5.35 µm
St. dev.:
1.35
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
ca. 3.59 - ca. 3.79 µm
Distribution:
ca. 9 - ca. 11 %
No.:
#2
Size:
ca. 5.21 - ca. 5.41 µm
Distribution:
ca. 49 - ca. 51 %
No.:
#3
Size:
ca. 8.36 - ca. 8.56 µm
Distribution:
ca. 89 - ca. 91 %

Any other information on results incl. tables

arithmetic mean diameter: 5.61 µm (SD: 1.74 µm)

geometric mean diameter: 5.35 µm (SD: 1.35 µm)

Applicant's summary and conclusion

Conclusions:
The calculated mass median aerodynamic diameter (MMAD) is 5.8 µm.