Registration Dossier
Registration Dossier
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EC number: 222-492-8 | CAS number: 3495-36-1
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is marketed or used in a non solid or granular form
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From October 2, 2009 to November 5, 2009
- 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)
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- determination of fibre length and diameter distributions
- Key result
- Percentile:
- D50
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Conclusions:
- Under the study conditions the test substance was non-inhalable.
- Executive summary:
A study was conducted to determine the particle size distribution of the solid form of test substance according to OECD Guideline 110 (Particle Size Distribution / Fiber Length and Diameter Distributions), in compliance with GLP. A screening test was performed with the test substance (19.71 g) being sieved for approximately 30 min on an Inclyno sieve shaker using a 100 µm sieve. The mass of the test substance that passed through the sieve was 1.28 g. The proportion of the test substance having an inhalable particle size < 100 µm was 6.49%. Under the study conditions the test substance was non-inhalable (Fox, 2009).
Referenceopen allclose all
The test substance was deliquescent (data from melting/freezing point), but it did not liquefy during the test. This ready absorption of atmospheric moisture would further reduce the potential for the test substance to become airborne.
Description of key information
Solid form: the particle size distribution was determined according to OECD Guideline 110.
Additional information
Solid form: The proportion of the test substance having an inhalable particle size < 100 µm was 6.49%. The test substance was non-inhalable.
Brine: the study does not need to be conducted because the substance is marketed or used in a non-solid or granular form
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