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:
from 2005 february 23rd to 2005 march 21st
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study performed according to the OECD Guideline 110.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005
Report Date:
2005

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
GLP compliance:
yes
Type of distribution:
counted distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Sample Reference Number : DEV75332
Date Request Received : December 20,2004
Test Substance State and Appearance : tan powder

Results and discussion

Particle size
Percentile:
D50
Mean:
ca. 384 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
> 212 µm
Distribution:
ca. 75.5 %
No.:
#2
Size:
< 106 µm
Distribution:
ca. 2.4 %
No.:
#3
Size:
>= 75 - <= 106 µm
Distribution:
ca. 1.8 %
No.:
#4
Size:
< 45 µm
Distribution:
ca. 0.1 %

Applicant's summary and conclusion

Conclusions:
The mass median and mean diameters were determined to be 384 µm and 318 µm, respectively.
The percent of particles less than 106 µm and 45 µm was determined to be 2.4% and 0.1%,
respectively. The percent of particles greater than 212 µm was determined to be 75.5%.