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:
March 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Laser Light Scattering. The particle size distribution of powder sample was analysed using the Mastersizer 2000 tool, which used the technique of Laser Diffraction to measure the size of particles. It does this by measuring the intensity of Light Scattered as a Laser beam passes through a dispersed particulate sample. This data is then analysed to calculate the size of the particles that created the scattering pattern.
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Details on test material:
The test material is a UVCB substance.

Results and discussion

Mass median aerodynamic diameter:
6.859 µm
Particle sizeopen allclose all
Key result
Percentile:
D10
Mean:
5.799 µm
Remarks on result:
other: St.dev. not calculated
Key result
Percentile:
D50
Mean:
26.408 µm
Remarks on result:
other: St.dev. not calculated
Key result
Percentile:
D90
Mean:
73.768 µm
Remarks on result:
other: St.dev. not calculated

Applicant's summary and conclusion

Executive summary:

The particle size distribution of powder sample was analysed using the Mastersizer 2000 tool, which used the technique of Laser Diffraction to measure the size of particles. It does this by measuring the intensity of Light Scattered as a Laser beam passes through a dispersed particulate sample. This data is then analysed to calculate the size of the particles that created the scattering pattern. The results are as follows:

  • D10 = 5.799µm
  • D50 = 26.408µm
  • D90 = 73.768µm