Registration Dossier
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EC number: 240-198-8 | CAS number: 16052-06-5
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:
- 2020-12-16
- 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:
- 1981
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- 2009
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 103.4 µm
- St. dev.:
- 4.8
- Key result
- Percentile:
- D50
- Mean:
- 443.6 µm
- St. dev.:
- 2.3
- Percentile:
- D90
- Mean:
- 783.1 µm
- St. dev.:
- 12.7
- Conclusions:
- The median particle size (D50) was determined to be 443.6 µm.
- Executive summary:
A study was conducted according to OECD Test Guideline 110 and ISO 13320 to determine the particle size distribution using the laser diffraction method with dry dispersion. Two test series of 3 measurements each were performed with the test item. The D10, D50 and D90 percentile were determined as D10 = 103.4 µm, D50 = 443.6 µm and D90 = 783.1 µm, respectively.
Reference
Two test series of 3 measurements each were performed with the test item. The values represented below are rounded values. The calculation of the average was carried out with the original not rounded values.
| Test series 1 [µm] | Standard deviation | Test series 2 [µm] | Standard deviation | Average [µm] | Standard deviation |
D10 | 98.6 | 2.4 | 108.2 | 10.8 | 103.4 | 4.8 |
D50 | 445.9 | 5.2 | 441.2 | 3.3 | 443.6 | 2.3 |
D90 | 770.4 | 13.9 | 795.8 | 25.9 | 783.1 | 12.7 |
Description of key information
The median particle size (D50) was determined to be 443.6 µm (reference 4.5-1).
Additional information
A study was conducted according to OECD Test Guideline 110 and ISO 13320 to determine the particle size distribution using the laser diffraction method with dry dispersion. Two test series of 3 measurements each were performed with the test item. The D10, D50 and D90 percentile were determined as D10 = 103.4 µm, D50 = 443.6 µm and D90 = 783.1 µm, respectively.
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