Registration Dossier
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EC number: 916-540-3 | CAS number: -
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
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- 2009
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187 (Particle Size Analysis by Laser Diffraction)
- Version / remarks:
- 2009
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Percentile:
- D50
- Mean:
- 304.8 µm
- St. dev.:
- 5.5
- Conclusions:
- D50: 304.8 µm
- Executive summary:
The particle size distribution was determined using laser diffraction. As measuring device, a Malvern Mastersizer 2000 is used. The powder is brought via a powder dispersing cell Scirocco 2000 into the laser light beam and the diffraction pattern is determined. From the diffraction pattern the particle size distribution is calculated.
Average D10 resulted to be 5.6 µm, D50 resulted to be 304.8 µm and the D90 resulted to be 1224.2 µm.
Conclusion
D50: 304.8 µm
Reference
Note that a part of the test item did not pass the internal sieve of the powder dispersing cell which prevents that agglomerates are fed to the measuring cell. This shows that the test item tends to agglomerate.
| µm | |||
| D10 | D50 | D90 | |
| Test series 1 | 5.5 | 308.7 | 1208.9 |
| Test series 2 | 5.6 | 300.9 | 1239.4 |
| Average | 5.6 | 304.8 | 1224.2 |
| SD | 0.1 | 5.5 | 21.6 |
Description of key information
D50: 304.8 µm
Additional information
ISO 13320 - laser scattering/diffraction
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