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EC number: 275-203-2 | CAS number: 71119-23-8
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:
- 2016-03-11
- 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)
- Version / remarks:
- 12 May 1981
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 8.42 µm
- St. dev.:
- 0.02
- Key result
- Percentile:
- D50
- Mean:
- 49.87 µm
- St. dev.:
- 0.35
- Percentile:
- D90
- Mean:
- 240.49 µm
- St. dev.:
- 0.2
- No.:
- #1
- Size:
- < 2 µm
- Distribution:
- 1.75 %
- No.:
- #2
- Size:
- >= 2 - <= 200 µm
- Distribution:
- 85.7 %
- No.:
- #3
- Size:
- > 200 µm
- Distribution:
- 12.6 %
- Conclusions:
- The D50 percentile were determined as D50 = 49.87 µm.
- Executive summary:
A study was conducted according to OECD Test Guideline 110 to determine the particle size distribution using the laser diffraction method with dry dispersion. Two measurements have been performed. The D10, D50 and D90 percentile were determined as D10 = 8.42 µm, D50 = 49.87 µm and D90 = 240.49 µm, respectively. 1.8 % of the total sample volume consisted of particles which were smaller than 2 µm, 85.7 % of the sample volume consisted of particles with sizes between 2 and 200 µm and 12.6 % of the sample volume consisted of particles larger than 200 µm.
Reference
Particle Size Distribution
| Measurement 1 [µm] | Measurement 2 [µm] | Average [µm] |
D10 (v, 0.1) | 8.434 | 8.406 | 8.42 |
D50 (v, 0.5) | 50.173 | 49.576 | 49.87 |
D90 (v, 0.9) | 240.312 | 240.665 | 240.49 |
Fraction [µm] | Measurement 1 [%] | Measurement 2 [%] | Average [%] |
Up to 2 µm | 1.75 | 1.75 | 1.8 |
2 -200 µm | 85.65 | 85.68 | 85.7 |
Over 200 µm | 12.59 | 12.58 | 12.6 |
Description of key information
TheD50 apercentile was determined as D50 = 49.87 µm (reference 4.5-1).
Additional information
A study was conducted according to OECD Test Guideline 110 to determine the particle size distribution using the laser diffraction method with dry dispersion. Two measurements have been performed. The D10, D50 and D90 percentile were determined as D10 = 8.42 µm, D50 = 49.87 µm and D90 = 240.49 µm, respectively. 1.8 % of the total sample volume consisted of particles which were smaller than 2 µm, 85.7 % of the sample volume consisted of particles with sizes between 2 and 200 µm and 12.6 % of the sample volume consisted of particles larger than 200 µm.
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