Registration Dossier
Registration Dossier
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EC number: 613-145-5 | CAS number: 63139-21-9
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 20.12.2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- 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
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Key result
- Percentile:
- D50
- Mean:
- 32 µm
- Remarks on result:
- other: no SD indicated
- Key result
- Percentile:
- D10
- Mean:
- 6.5 µm
- Remarks on result:
- other: no SD indicated
- Key result
- Percentile:
- D90
- Mean:
- 166 µm
- Remarks on result:
- other: no SD indicated
- Conclusions:
- The median particle size L50 of the test item deduced from the particle size distributions was 32 μm.
- Executive summary:
The particle size distribution of the test item was determined by laser diffraction (light scattering) according to OECD Guideline 110 and ISO 13320. The sample contained a significant amount of large agglomerates. Hence, the sample was sieved (mesh size 1000μm). Only the fine fraction was analyzed by laser diffraction. Therefore, the results only characterized the fine fraction of the test item (63.3 % (w/w)) with a particle size below 1000μm. The particle size distribution showed a polymodal distribution and deviated from a Gaussian distribution.
The median particle size L50 of the test item deduced from the particle size distributions was 32 μm.
The particle size L10 of the test item deduced from the particle size distributions was 6.5 μm.
The particle size L90 of the test item deduced from the particle size distributions was 166 μm.
Reference
Description of key information
The mean particle size D50 of the test item was 32 µm (reference 4.5-1).
Additional information
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