Registration Dossier
Registration Dossier
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EC number: 278-115-2 | CAS number: 75199-13-2
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:
- 28 June 2019
- 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 B: Fibre Length and Diameter Distributions
- Version / remarks:
- 1981
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
- Version / remarks:
- 1996
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- 2009
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- other: fine fraction passing through a 1000 µm sieve
- Type of distribution:
- volumetric distribution
- Mass median aerodynamic diameter:
- 16.59 µm
- Percentile:
- D50
- Mean:
- 16.59 µm
- Remarks on result:
- other: fine fraction
- Percentile:
- D10
- Mean:
- 1.37 µm
- Remarks on result:
- other: fine fraction
- Percentile:
- D90
- Mean:
- 179.48 µm
- Remarks on result:
- other: fine fraction
- Conclusions:
- The mass median diameter (D50) of the test item is 16.59 µm.
- Executive summary:
The particle size of the test item was evaluated in an experimental study using the laser diffraction method according to the OECD guideline 110 (1981) and ISO 13320 (2009).
The following results were obtained:
D10 = 1.37 µm
D50 = 16.59 µm (mass median diameter)
D90 = 179.48 µm
Reference
One test series of 3 measurements was performed with the fine fraction of the test item.
A graph was created which shows the results. On the left y-axis the fraction distribution and on the right y-axis the cumulative distribution is shown.
A coarse fraction greater than 1000 µm of 79.3 % (wt.) and a fine fraction of less than 1000 µm of 20.7 % (wt.) was found. The fine fraction (<1000 µm) of the test item has a median particle size (D50) of 17 µm, which was determined by laser diffraction measurement according to ISO 13320 (2009) and OECD 110 (1981).
Description of key information
D50 of the fine fraction (20.7 % w/w) is 16.59 µm .
Additional information
OECD guideline 110 (1981) and ISO 13320 (2009).
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