Registration Dossier
Registration Dossier
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EC number: 231-174-8 | CAS number: 7440-65-5
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:
- 24 April 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Within this study, the distribution of sizes of the particles within the sample was determined using a Malvern Mastersizer 2000. The theory used was the Fraunhofer model. This model can predict the scattering pattern that is created when a solid, opaque disc of a known size is passed through a laser beam.
- GLP compliance:
- not specified
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
- Key result
- Percentile:
- D10
- Mean:
- 71.182 µm
- Remarks on result:
- other: Average of 3 runs
- Key result
- Percentile:
- D50
- Mean:
- 288.911 µm
- Remarks on result:
- other: Average of 3 runs
- Key result
- Percentile:
- D90
- Mean:
- 555.382 µm
- Remarks on result:
- other: Average of 3 runs
- Conclusions:
- The d10, d50 and d90 of a representative sample of yttrium metal powder were determined to be 71.182 μm, 288.911 µm, and 555.382 µm, respectively, using a Malvern Mastersizer 2000.
Reference
Detailed results of this analysis are as follows:
- Concentration: 0.1161 % vol
- Span: 1.676
- Uniformity: 0.497
- Results units: volume
- Specific surface area: 0.0749 m²/g
- Surface weighted mean D[3,2]: 80.092 µm
- Volume weighted mean D[4,3]: 306.837 µm
The D(0.00) and D(1.00) values are 1.13 µm and 888.25 µm respectively.
Description of key information
Based on an experimental study (Treibacher Industrie AG, 2017, Klimisch score 1), the d10, d50 and d90 of a representative sample of yttrium metal were determined to be 71.182 μm, 288.911 µm, and 555.382 µm, respectively, using a Malvern mastersizer 2000.
Additional information
d10 = 71.182 µm, d50=288.911 µm, d90=555.382 µm
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