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EC number: 208-536-9 | CAS number: 532-40-1
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:
- 09 Jan 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: under consideration of: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Test Guideline 110: particle size distribution
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- other: crystalline and transparent particles
- Type of distribution:
- volumetric distribution
- Specific details on test material used for the study:
- Storage conditions: Ambient temperature (10 to 30 °C), dry
- Percentile:
- D10
- Mean:
- 12.8 µm
- St. dev.:
- 0.28
- Remarks on result:
- other: Individual results: 13.0 µm, 12.6 µm
- Percentile:
- D50
- Mean:
- 73.4 µm
- St. dev.:
- 1.41
- Remarks on result:
- other: Individual results: 74.4 µm, 72.4 µm
- Percentile:
- D90
- Mean:
- 227.8 µm
- St. dev.:
- 2.26
- Remarks on result:
- other: Individual results: 226.2 µm, 229.4 µm
- No.:
- #1
- Size:
- < 1 µm
- Distribution:
- 0 %
- Remarks on result:
- other: 2 test series
- No.:
- #1
- Size:
- < 10 µm
- Distribution:
- 7.43 %
- Remarks on result:
- other: 2 test series distributions. 7.31% and 7.54%
Reference
Results
Median values were calculated from unrounded values.
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:
1sttest series L50= 74.4 µm; 2ndtest
series L50= 72.4 µm
The average of the median particle size: L50= 73.4 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:
1sttest series: L10= 13.0 µm; 2ndtest
series: L10= 12.6 µm
The average of the particle size: L10= 12.8 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:
1sttest series: L90= 226.2 µm; 2ndtest
series: L90= 229.4 µm
The average of the particle size: L90= 227.8 µm
The particle size distribution showed a polymodal distribution. The maxima were seen at ca. 100 µm and ca. 1500 µm. A shoulder was seen at ca. 3 µm
Description of key information
D10: 12.8 µm
D50: 73.4 µm
D90: 227.8 µm
(OECD 110, Laser Diffraction/Scattering)
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