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EC number: 237-857-7 | CAS number: 14024-56-7
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 15 January 2018 to 16 February 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: European Commission Guidance Document EUR 20268
- Version / remarks:
- European Commission Guidance Document EUR 20268 ‘Determination of Particle Size Distribution, Fibre Length and Diameter Distribution of Chemical Substances’ (2002).
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Certificate is included in overall report attached under Data Source
- Type of method:
- cascade impaction
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
Test material
- Reference substance name:
- Bis(pentane-2,4-dionato-O,O')magnesium
- EC Number:
- 237-857-7
- EC Name:
- Bis(pentane-2,4-dionato-O,O')magnesium
- Cas Number:
- 14024-56-7
- Molecular formula:
- C10H14MgO4
- IUPAC Name:
- magnesium;4-oxopent-2-en-2-olate
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
Particle size distribution at different passagesopen allclose all
- No.:
- #1
- Size:
- >= 5.5 - < 10 µm
- Distribution:
- > 0.007 - <= 1.99 %
- No.:
- #2
- Size:
- >= 2.4 - < 5.5 µm
- Distribution:
- >= 0 - < 0.016 %
Applicant's summary and conclusion
- Conclusions:
- Particle size data acquired for the test item is shown in the following table:
Percentage of test item with an inhalable particle size <100 μm (Sieve méthod) = 59.8%
Percentage of test item with a thoracic particle size <10.0 μm (Cascade Impactor) ≤1.99%
Percentage of test item with a respirable particle size <5.5 μm (Cascade Impactor) <0.1%
The inhalable fraction is defined as the mass fraction of particles which can be inhaled by nose or mouth, the thoracic fraction is defined as the mass fraction of particles that passes the larynx and the respirable fraction is defined as the mass fraction of particles that reaches the alveoli. - Executive summary:
Sampling for the cascade impactor determinations was performed by rolling the test item container for approximately 10 minutes then sampled from the top, middle and bottom.
Too few particles were of a size less than 10.0 μm to allow accurate assessment of the mass median aerodynamic diameter.
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