Registration Dossier
Registration Dossier
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EC number: 643-080-8 | CAS number: 24389-25-1
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:
- comparable to guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
- 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:
- 169.977 µm
- Geometric standard deviation:
- >= 1.5 - <= 1.565
- Remarks on result:
- other: No particles were less than 10 µm in diameter
- Percentile:
- D10
- Mean:
- 99.955 µm
- St. dev.:
- 3.04
- Key result
- Percentile:
- D50
- Mean:
- 169.977 µm
- St. dev.:
- 1.13
- Percentile:
- D90
- Mean:
- 281.702 µm
- St. dev.:
- 3.12
- Conclusions:
- The MMAD for the test substance was 169.977 µm.
Reference
| RUN 1 | RUN 2 | RUN 3 | RUN 4 |
RUN 5 | Average | |
| Volume weighted mean | 180.638 | 182.825 | 182.685 |
180.445 |
182.445 | 181.721 |
| Median (d.50) | 169.002 | 170.784 | 171.562 | 168.464 | 169.949 | 169.977 |
| Mode | 170.502 | 171.562 |
174.213 | 173.562 | 174.363 | 172.647 |
| 10% of material is < | 101.345 | 103.091 | 102.699 | 95.606 | 97.126 | 99.955 |
| 50% of material is < | 169.002 | 170.784 | 171.562 | 168.464 | 169.949 | 169.977 |
| 90% of material is < | 277.558 | 280.782 | 279.553 | 284.336 | 286.087 | 281.702 |
Description of key information
Using a standard method (laser/scattering diffraction) to analyse particle size distribution, the mass median aerodynamic diameter was calculated to be 169.977 micrometres.
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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