Registration Dossier
Registration Dossier
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EC number: 235-920-3 | CAS number: 13047-13-7
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 20 February 2018
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Laser diffraction method using a Malvern Mastersizer 3000 dry
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- 4-(hydroxymethyl)-4-methyl-1-phenylpyrazolidin-3-one
- EC Number:
- 235-920-3
- EC Name:
- 4-(hydroxymethyl)-4-methyl-1-phenylpyrazolidin-3-one
- Cas Number:
- 13047-13-7
- Molecular formula:
- C11H14N2O2
- IUPAC Name:
- 4-(hydroxymethyl)-4-methyl-1-phenylpyrazolidin-3-one
- Test material form:
- solid: particulate/powder
1
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D10
- Mean:
- >= 41.4 - <= 51.5 µm
- Remarks on result:
- other: range based on 3 runs
- Percentile:
- D50
- Mean:
- >= 213 - <= 230 µm
- Remarks on result:
- other: range based on 3 runs
- Percentile:
- D90
- Mean:
- >= 456 - <= 472 µm
- Remarks on result:
- other: range based on 3 runs
Any other information on results incl. tables
Distribution width: 1.765 -2.017
Applicant's summary and conclusion
- Conclusions:
- 90% of the particles in the sample was > 40 um, which is above inhalable or respirable size.
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