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:
2010

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: ISO 13320-1 : 1999
Deviations:
no
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
>= 7.89 - <= 8.18 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
1.98
St. dev.:
0.05
Percentile:
D50
Mean:
8.03 µm
St. dev.:
0.13
Percentile:
D90
Mean:
29.9 µm
St. dev.:
0.65

Any other information on results incl. tables

overall volume weighted mean diameter: 13.961 µm (range of means: 13.7 – 14.2 µm);

approximate volume % of the dispersion: ≤ 100 µm: 99%; ≤ 10 µm: 59%, ≤ 4 µm: 26%

Applicant's summary and conclusion

Executive summary:

The particle size distribution of the substance was determined according to ISO 13320-1:1999. The overall mass median diameter (D50 percentile) was 8.03 µm (range of medians of 6 measurements: 7.89 – 8.18 µm). The corresponding overall D10 and D90 percentiles were 1.98 and 29.8 µm, respectively. The overall volume weighted mean diameter was 14.0 µm (range of means: 13.7 – 14.2 µm). Hence the particle size data attained from the six measurements were quite consistent. Approximately 99 volume % of the generated dispersion was ≤ 100 µm, 59% ≤ 10 µm and approximately 26% ≤ 4 µm.