Registration Dossier
Registration Dossier
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EC number: 404-110-3 | CAS number: -
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Oct 2014 to Jan 2015
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Comparable to guideline study with acceptable restrictions. 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:
- 2 016
- Report date:
- 2016
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: company guideline
- Principles of method if other than guideline:
- According to company guideline, similar to ISO 13320-1: Particle Size Analysis - Laser Diffraction Methods
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D10
- Mean:
- 3.557 µm
- St. dev.:
- 0.1
- Percentile:
- D50
- Mean:
- 21.041 µm
- St. dev.:
- 2.7
- Percentile:
- D90
- Mean:
- 149.635 µm
- St. dev.:
- 37.3
Any other information on results incl. tables
Given standard deviation is based on the general experience with the method and pigments. The estimated values are typical standard deviations for pigments:
D10: 4 % of D10 (minimum value 0.05 µm)
D50: 13 % of D50 (minimum value 0.1 µm)
D90: 29 % of D90 - D50
For further percentiles see attached report.
Applicant's summary and conclusion
- Conclusions:
- The mass median diamter of the test item was 21.041 µm.
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