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Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

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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: according to ISO 13320-1
Remarks:
Laser diffraction is the well experienced standard procedure for pigments and pigmentary compounds to determine particle size distribution of the substance as it is manufactured

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2020
Report date:
2020

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: ISO 13320-1
Principles of method if other than guideline:
Laser diffraction particle sizing
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- batch: DEB2261556
- composition: 76,0 % (a/a) constituent 1, 18,2 % (a/a) constituent 2, 1,6 % 1,4 -diketo-3,6-bis-(4'-sulfo-biphenyl-4-yl)-pyrrolo-<3,4-c>-pyrrole, 3,4 % (a/a) unknown organic compounds, 0.8 % water

Results and discussion

Particle size
Key result
Percentile:
D50
Mean:
17.3 µm
St. dev.:
2.2

Any other information on results incl. tables

Given standard deviation is based on the general experience with the method:

D50: 13 % of D50 (minimum value 0.1 µm)

Further values and information are remarked in the attached measuring report

Applicant's summary and conclusion