Registration Dossier
Registration Dossier
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EC number: 234-525-3 | CAS number: 12007-99-7
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
- Study period:
- 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study without detailed documentation
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Deviations:
- not specified
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
- Specific details on test material used for the study:
- 400 mesh material as sold
Lot 702M130 - Key result
- Percentile:
- D50
- Mean:
- 11.65 µm
- Remarks on result:
- other: standard deviation not reported
- Percentile:
- other: D97
- Mean:
- 30.82 µm
- Remarks on result:
- other: standard deviation not reported
- Percentile:
- other: D6
- Mean:
- 0.539 µm
- Remarks on result:
- other: standard deviation not reported
- Percentile:
- other: D5
- Mean:
- 0.43 µm
- Remarks on result:
- other: standard deviation not reported
- Conclusions:
- The median particle size (D50) of a typical technical grade calcium hexaboride powder is appr. 12 µm, the D97 is appr. 31 µm.
- Executive summary:
The median particle size (D50) of a typical technical grade calcium hexaboride powder is appr. 12 µm, the D97 is appr. 31 µm. The study was conducted by laser diffraction in an automated instrument according to a guideline method but without detailed documentation and not under GLP. The study is therefore considered reliable with restrictions.
Reference
Description of key information
The median particle size (D50) of a typical technical grade calcium hexaboride powder is appr. 12 μm, the D97 is appr. 31 μm.
Additional information
The study was conducted by laser diffraction in an automated instrument according to a guideline method but without detailed documentation and not under GLP. The study is therefore considered reliable with restrictions.
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