Registration Dossier
Registration Dossier
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EC number: 215-145-7 | CAS number: 1306-06-5
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: ISO 13320:2009 Particle size analysis by Laser diffraction
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- Hydroxylapatite (Ca5(OH)(PO4)3)
- EC Number:
- 215-145-7
- EC Name:
- Hydroxylapatite (Ca5(OH)(PO4)3)
- Cas Number:
- 1306-06-5
- Molecular formula:
- Ca5HO13P3
- IUPAC Name:
- pentacalcium hydroxide triphosphate
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
- Mass median aerodynamic diameter:
- 7.6 µm
Particle sizeopen allclose all
- Key result
- Percentile:
- other: MMAD
- Mean:
- 7.6 µm
- Remarks on result:
- other: no "St.dev" is given
- Key result
- Percentile:
- D50
- Mean:
- 4.3 µm
- Remarks on result:
- other: no "St.dev" is given
Applicant's summary and conclusion
- Conclusions:
- Test item shows a particle size distribution of D50 = 4.3 µm.
The mass median aerodynamic diameter (MMAD) of the test item is calculated as ca. 7.6 µm
(based on relative density = 3.16 and shape factor K=1 for spheric particles)
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