Registration Dossier

Diss Factsheets

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:
May 2014
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Particle size was measured with a Bluewave particle size analyzer from Microtrac (laser diffraction method). Sample was injected into the analyzer with a Turbotrac dry powder dispersion device.
GLP compliance:
no
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
Humic acids and fulvic acids extracted from leonardite, reaction product with formaldehyde, potassium hydrogen sulfite, sodium hydrogen sulfite and potassium hydroxide
Molecular formula:
NA, macromolecular compound
IUPAC Name:
Humic acids and fulvic acids extracted from leonardite, reaction product with formaldehyde, potassium hydrogen sulfite, sodium hydrogen sulfite and potassium hydroxide

Results and discussion

Particle size
Percentile:
D50
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:
> 1 408 µm
Distribution:
5.1 %
No.:
#2
Size:
> 704 - < 1 408 µm
Distribution:
7.4 %
No.:
#3
Size:
> 352 - < 704 µm
Distribution:
1.9 %
No.:
#4
Size:
> 176 - < 352 µm
Distribution:
5.3 %
No.:
#5
Size:
> 88 - < 176 µm
Distribution:
29.2 %
No.:
#6
Size:
> 44 - < 88 µm
Distribution:
35.2 %
No.:
#7
Size:
> 22 - < 44 µm
Distribution:
11.9 %
No.:
#8
Size:
> 13 - < 22 µm
Distribution:
3.1 %
No.:
#9
Size:
> 11 - < 13 µm
Distribution:
0.9 %
No.:
#10
Size:
< 9.25 µm
Distribution:
0 %

Applicant's summary and conclusion

Categories Display