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EC number: 201-739-3 | CAS number: 87-32-1
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:
- 30 Jul 2015
- 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)
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- adopted in 2009
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Specific details on test material used for the study:
- Storage conditions: ambient temperature (10 – 30 °C)
- Percentile:
- D50
- Mean:
- 94 µm
- St. dev.:
- 0.35
- Remarks on result:
- other: Individual test results: 93.8 µm, 94.3 µm
- Percentile:
- D10
- Mean:
- 14.1 µm
- St. dev.:
- 0
- Remarks on result:
- other: Individual results: 14.1 µm, 14.1 µm
- Percentile:
- D90
- Mean:
- 292.7 µm
- St. dev.:
- 9.19
- Remarks on result:
- other: Individual results: 286.2 µm, 299.2 µm
- No.:
- #1
- Size:
- < 2 µm
- Distribution:
- < 0.24 %
- No.:
- #2
- Size:
- < 2 µm
- Distribution:
- < 0.24 %
Reference
Results
Laser diffraction
The median particle size L50(D (v, 0.5): 50% of
particle volume or particle mass with lower particle diameter) deduced
from these distributions were:
1st test series L50= 93.8 µm; 2nd test
series L50= 94.3 µm
The average of the median particle size: L50= 94.0 µm
The particle size L10(D (v, 0.1): 105 of particle
volume or particle mass with lower particle diameter) deduced from these
distributions were:
1st test series: L10= 14.1 µm; 2nd test
series: L10= 14.1 µm
The average of the particle size: L10= 14.1 µm
The particle size L90(D (v, 0.9): 90% of particle
volume or particle mass with lower particle diameter) deduced from these
distributions were:
1st test series: L90= 286.2 µm; 2nd test
series: L90= 299.2 µm
The average of the particle size: L90= 292.7 µm
The particle size distribution showed a polymodal distribution. Two maxima were seen at ca. 150 µm and 1500 µm. Shoulders were observed at ca. 3 µm and 40 µm.
Description of key information
D10: 14.1 µm
D50: 94.0 µm
D90: 292.7 µm
(OECD 110, Laser Diffraction/Scattering)
Additional information
The particle size distribution showed a polymodal distribution. Two maxima were observed at approximately 150 µm and approximately 1500 µm. Shoulders were observed at approximately 3 µm and 40 µm.
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