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EC number: 825-571-0 | CAS number: 60428-79-7
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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”, Handbook K.
- Version / remarks:
- 2007
- 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
- Mass median aerodynamic diameter:
- 15.2 µm
- Geometric standard deviation:
- >= 2.617 - <= 2.625
- Key result
- Percentile:
- D50
- Mean:
- 12 µm
- St. dev.:
- 0.005
- Remarks on result:
- other: n=5
- Percentile:
- D10
- Mean:
- 2.7 µm
- St. dev.:
- 0.007
- Remarks on result:
- other: n=5
- Percentile:
- D90
- Mean:
- 27.4 µm
- St. dev.:
- 0.075
- Remarks on result:
- other: n=5
Reference
The coefficient of variation for d50 is less than 3%; d10 and d90 are less than 5%. Thus repeatability of the characteristic particles in the size distribution are within the acceptable limits as per the ISO 13320 test standard.
The test material was visually observed to be a medium to fine yellow powder with clusters. With 10x magnification, the particles appeared to be irregular shaped crystals. The smallest individual particle size was approximately 3 µm and the largest individual size was approximately 48 µm. With 40x magnification, the sample was observed to be made up of single crystalline particles.
Detailed results are presented in the attached document "S-600 – Particle size distribution.pdf".
Description of key information
d(10) = 2.70 µm; d(50) = 12.0 µm; d(90) = 27.4 µm, MMAD: 15.2 µm; 40% < 10 µm (ISO 13320:2009, CIPAC MT 187)
Additional information
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