Registration Dossier
Registration Dossier
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EC number: 231-449-2 | CAS number: 7558-80-7
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
- Remarks:
- .
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Test material was sieved in an alpine air jet sieving machine.
- GLP compliance:
- no
- Type of method:
- sieving
- Type of distribution:
- volumetric 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:
- < 45 µm
- Distribution:
- ca. 50 %
- Conclusions:
- The substance is considered to pose an inhalation risk (as a significant number of particles are present at <100µm in diameter).
This study is considered to be acceptable and to adequately satisfy both the guideline requirement and the regulatory requirement as a key study for this endpoint.
Reference
Description of key information
Two studies exist (company test data and MMAD as reported in an inhalation study). The company data has been selected as a key study as this is most representative of the substance that is placed on the market.
Additional information
Ca. 50% of the particles were found to be <45µm.
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