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EC number: 274-958-5 | CAS number: 70865-30-4
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:
- December 07th, 2017
- 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)
- Version / remarks:
- adopted in 1981
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- adopted in 2009
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187 (Particle Size Analysis by Laser Diffraction)
- Version / remarks:
- adopted in 2009
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Percentile:
- D10
- Mean:
- 1.9 µm
- St. dev.:
- 0.07
- Percentile:
- D50
- Mean:
- 8 µm
- St. dev.:
- 0.21
- Percentile:
- D90
- Mean:
- 35.3 µm
- St. dev.:
- 0.07
- Conclusions:
- D50: 8.0 µm
- Executive summary:
The particle size distribution of test item was analyzed by laser diffraction tecnique, according to the ISO 13320 method.
A representative sample of the test item was fed to the powder dispersing cell Scirocco 2000. The diffraction pattern of the laser light is measured by the detector of the particle analyzer. From the measured diffraction pattern the particle size distribution was calculated.
Based on the mean of two replicates, the D10, D50 and D90 were was found to be 1.9, 8.0 and 35.3 µm, respectively.
Conclusion
D50: 8.0 µm
Reference
| µm | |||
| D10 | D50 | D90 | |
| Replicate 1 | 1.9 | 8.2 | 35.4 |
| Replicate 2 | 1.8 | 7.9 | 35.3 |
Mean |
1.9 | 8.0 | 35.3 |
SD |
0.07 | 0.21 | 0.07 |
Description of key information
D50: 8.0 µm
Additional information
Particle Size Analysis by Laser Diffraction - ISO 13320 and CIPAC MT 187
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