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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Test procedure in accordance with generally accepted scientific standards and described in sufficient detail; however, no GLP-study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report Date:
2012

Materials and methods

Test guideline
Qualifier:
no guideline available
Deviations:
not applicable
Principles of method if other than guideline:
The particle size distribution is analysed by laser scattering analysis. Laser light interacts with the particles causing diffraction, refraction and absorption, thus producing a characteristic pattern of scattered light. If the particle size is significantly higher than the wavelength of the laser light predominantly diffraction patterns are produced. The principles of measurement are based on the Mie scattering theory.
GLP compliance:
no
Type of distribution:
other: laser diffraction

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
not specified

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
12.34 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
1.89 µm
Percentile:
D50
Mean:
12.34 µm
Percentile:
D90
Mean:
40.22 µm

Any other information on results incl. tables

Obscuration: 6.76 %

Residual: 1.32 %

Specific surface area: 395.8 m2/kg

Span: 3.104

Applicant's summary and conclusion

Conclusions:
D10 = 1.89 μm
D50 = 12.34 μm= mass median diameter (MMD)
D90 = 40.22 μm