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EC number: 256-917-3 | CAS number: 51022-74-3
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:
- 2018-01-18 to 2018-05-18
- 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 A: Particle Size Distribution (effective hydrodynamic radius)
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- 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:
- agglomerate
- Type of distribution:
- volumetric distribution
- Percentile:
- D50
- Mean:
- 1.951 µm
- St. dev.:
- 0.16
- Percentile:
- D10
- Mean:
- 0.552 µm
- St. dev.:
- 0
- Percentile:
- D90
- Mean:
- 184.3 µm
- St. dev.:
- 77.8
- Conclusions:
- The particle size distribution of the test item was determined by laser diffraction (light scattering):
Average of the median particle size D (v, 0.5): 1.951 µm (standard deviation: 0.16 µm)
Average of the particle size D (v, 0.1): 0.552 µm (standard deviation: 0.00 µm)
Average of the particle size D (v, 0.9): 184.3 µm (standard deviation: 77.8 µm) - Executive summary:
The particle size distribution of the test item was determined by laser diffraction (light scattering). The test item consisted of non-transparent particles that tended to agglomeration. The agglomeration influenced the test results.
Average of the median particle size D (v, 0.5): 1.951 µm (standard deviation: 0.16 µm)
Average of the particle size D (v, 0.1): 0.552 µm (standard deviation: 0.00 µm)
Average of the particle size D (v, 0.9): 184.3 µm (standard deviation: 77.8 µm)
Reference
The test item consisted of non-transparent particles that tended to agglomeration. The agglomeration influenced the test results.
Median particle size D (v, 0.5): 50% of particle volume or particle mass with lower particle diameter
1st test series: 1.926 µm
2nd test series: 1.975 µm
Average of the median particle size: 1.951 µm (standard deviation: 0.16 µm)
Particle size D (v, 0.1): 10% of particle volume or particle mass with lower particle diameter
1st test series: 0.553 µm
2nd test series: 0.550 µm
Average of the particle size: 0.552 µm (standard deviation: 0.00 µm)
Particle size D (v, 0.9): 90% of particle volume or particle mass with lower particle diameter
1st test series: 162.9 µm
2nd test series: 205.7 µm
Average of the particle size: 184.3 µm (standard deviation: 77.8 µm)
The particle size distribution showed a polymodal distribution with two maxima and two shoulders. The first maximum was observed at approximately 1.5 µm and the second at approximately 200 µm. The shoulders were observed at approximately 0.3 µm and at approximately 10 µm. The second measurement additionally showed a third shoulder at approximately 350 µm.
Description of key information
The particle size distribution of the test item was determined by laser diffraction (light scattering).The test item consisted of non-transparent particles that tended to agglomeration. The agglomeration influenced the test results.
Average of the median particle size D (v, 0.5): 1.951 µm (standard deviation: 0.16 µm)
Average of the particle size D (v, 0.1): 0.552 µm (standard deviation: 0.00 µm)
Average of the particle size D (v, 0.9): 184.3 µm (standard deviation: 77.8 µm)
Additional information
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