Registration Dossier
Registration Dossier
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EC number: 257-775-5 | CAS number: 52238-69-4
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:
- January 19, 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- 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
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
- Version / remarks:
- 2009
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 4.4 µm
- St. dev.:
- 0.2
- Percentile:
- D50
- Mean:
- 220.1 µm
- St. dev.:
- 1.5
- Percentile:
- D90
- Mean:
- 717.3 µm
- St. dev.:
- 34.3
- Conclusions:
- D50: 220 µm
- Executive summary:
The particle size distribution was determined using laser diffraction, according to the OECD 110, CIPAC MT 187 and ISO 13320 methods. As measuring device, a Malvern Mastersizer 2000 was used. The powder was brought via a powder dispersing cell Scirocco 2000 into the laser light beam and the diffraction pattern was determined. The particle size distribution was calculated on the basis of the diffraction pattern.
Two test series of 3 measurements each were performed with the test item.
The average D10 resulted to be 4.4 µm, D50 220.1 µm and D90 34.3 µm.
Conclusion
D50: 220 µm
Reference
| Particle size (µm) | |||
| D10 | D50 | D90 | |
| Test serie 1 | 4.5 | 219.0 | 693.0 |
| Test serie 2 | 4.2 | 221.1 | 741.5 |
| Average | 4.4 | 220.1 | 717.3 |
| SD | 0.2 | 1.5 | 34.3 |
Description of key information
D50: 220 µm
Additional information
OECD 110, CIPAC MT 187, ISO 13320 - Laser diffraction method.
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