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:
07.09.2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions
Deviations:
no
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
2009
Deviations:
no
Qualifier:
according to
Guideline:
other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
Deviations:
no
GLP compliance:
no
Type of method:
Laser scattering/diffraction

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid

Results and discussion

Particle sizeopen allclose all
Key result
Percentile:
D50
Mean:
16 µm
Remarks on result:
other: no SD indicated
Key result
Percentile:
D10
Mean:
4 µm
Remarks on result:
other: no SD indicated
Key result
Percentile:
D90
Mean:
44 µm
Remarks on result:
other: no SD indicated

Applicant's summary and conclusion

Conclusions:
The mean particle size D50 of the test item was 16 µm.
Executive summary:

The particle size distribution of the test item is determined by laser diffraction (light scattering) according to OECD Guideline OECD 110. The particle size distribution showed a polymodal distribution with two maxima. The first maximum was observed at approx. 20 µm and second at approx. 300 µm. A shoulder was observed at approx. 300 µm. The mean particle size D50 of the test item was 16 µm.