Registration Dossier
Registration Dossier
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EC number: 231-834-5 | CAS number: 7758-11-4
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
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Determination of particle size of samples suspended in a liquid dispersant, based on the study of diffraction of a laser beam. This technique works in absolute and requires no calibration. General application to powders and dispersions with particle sizes between 0.02 and 2000 microns.
- GLP compliance:
- not specified
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- counted distribution
- Percentile:
- D50
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- No.:
- #1
- Size:
- < 100 µm
- Distribution:
- ca. 65 %
- Conclusions:
- Particle size distribution indicates substance is an inhalation risk (a significant proportion of the particles are present at < 100 µm). This study is considered to be scientifically justified for use as a key study.
Reference
Description of key information
One key study exists. This study is considered to be scientifically justified for use as a key study as the granulometry of the material is sufficiently characterised.
Additional information
Particle size distribution indicates substance is an inhalation risk (a significant proportion of the particles are present at < 100 µm).
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