Registration Dossier
Registration Dossier
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EC number: 445-760-8 | CAS number: 122886-55-9
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:
- December 2, 2002 - February 24, 2003
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: NF ISO 2591-1(1989)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: NFX11-507 (1989)
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- (only the preliminary test was conducted according to GLP principles, not the main test)
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
- Percentile:
- D50
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Percentile:
- D50
- Mean:
- 452.75 µm
- Remarks on result:
- other: Test #1
- Percentile:
- D50
- Mean:
- 447.991 µm
- Remarks on result:
- other: Test #2
- Conclusions:
- The particle size distribution of the substance was determined in duplicate, using laser diffraction analysis. The median D50 was 452.750 µm and 447.991 µm. All particles were >17 µm and approximately 92% of all particles were >100 µm.
Reference
Preliminary test
- Dry sieving was not appropriate as the test item blocked the apertures of the test sieve
- Wet sieving was not possible as the test item was not wettable with water
Main test
-Particle Size Distribution
Test #1:
99.89% >19.9 µm
99.34% >29.9 µm
98.61% >39.23 µm
97.35% >51.47 µm
94.55% >77.33 µm
92.56% >101.4 µm
90.02% >152.4 µm
88.32% >200 µm
83.9% >300.5 µm
70.1% >394.2 µm
50.47% >451.5 µm
26.18% >517.2 µm
10.52% >592.3 µm
1.57% >771.1 µm
Median diameter: 452.750 µm
Mean diameter: 430.942 µm
-Particle Size Distribution Test #2:
99.88% >26.11 µm
99.72% >29.9 µm
99.14% >39.23 µm
98.03% >51.47 µm
95.75% >77.33 µm
94.75% >101.4 µm
94.09% >152.4 µm
93.72% >200 µm
90.77% >300.5 µm
71.18% >394.2 µm
48.69% >451.5 µm
26.94% >517.2 µm
12.46% >592.3 µm
1.68% >771.1 µm
Median diameter: 447.991 µm
Mean diameter: 448.468 µm
Description of key information
The particle size distribution of the substance was determined twice. The median D50 was 452.750 µm and 447.991 µm. All particles were >17 µm and approximately 92% of all particles were >100 µm.
Additional information
The particle size distribution of the substance was determined using laser diffraction analysis.
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