Registration Dossier
Registration Dossier
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EC number: 269-284-3 | CAS number: 68214-04-0
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:
- 8 September 2016 to 14 September 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- counted distribution
- Mass median aerodynamic diameter:
- 61.9 µm
- Key result
- Percentile:
- D10
- Mean:
- 15.78 µm
- Remarks on result:
- other: SD not provided in the report
- Key result
- Percentile:
- D50
- Mean:
- 48.94 µm
- Remarks on result:
- other: SD not provided in the report
- Key result
- Percentile:
- D90
- Mean:
- 113.08 µm
- Remarks on result:
- other: SD not provided in the report
- Conclusions:
- The MMAD of the substance is 61.9 µm
- Executive summary:
Using laser diffraction, the D50 (volume median diameter (VMD)) was found to be 48.94 µm. The calculated MMAD of the substance is 61.9 µm.
Reference
MMAD is calculated following the equation: MMAD = D50* (ρ/K)0.5
D50 = volume median diameter (VMD)
ρ = particle density
K = shape factor (set at 1 for spheric particles as assessed by microscopy)
Description of key information
Using laser diffraction, the D50 (volume median diameter (VMD)) was found to be 48.94 µm. The calculated MMAD of the substance is 61.9 µm.
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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