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EC number: 209-963-3 | CAS number: 599-04-2
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 31.08.2009 - 04.11.2009
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: According to guideline under GLP
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: EUROPEAN COMMISSION, Directorate General XII-JRC, Science Research md Development-Joint Research Centre. "Particle Size Distribution, Fibre Length and Diameter Distribution" Guidance Document, ECB/TM/February 1996.
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Type of distribution:
- counted distribution
Test material
- Reference substance name:
- α-hydroxy-β,β-dimethyl-γ-butyrolactone
- EC Number:
- 209-963-3
- EC Name:
- α-hydroxy-β,β-dimethyl-γ-butyrolactone
- Cas Number:
- 599-04-2
- Molecular formula:
- C6H10O3
- IUPAC Name:
- (3R)-3-hydroxy-4,4-dimethyloxolan-2-one
- Reference substance name:
- 209 963 3
- IUPAC Name:
- 209 963 3
- Details on test material:
- - Name of test material (as cited in study report): R-Pantolactone
- Physical state: solid
- Analytical purity: 99.6%
- Storage condition of test material: RT
Constituent 1
Constituent 2
Results and discussion
Particle size
- Percentile:
- D50
- Mean:
- 2 000 - 4 000 µm
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Any other information on results incl. tables
| Mesh size (µm) 5000 |
Mean (%) 17.27 |
| 4000 | 48.53 |
| 2000 | 33.94 |
| 1000 | 0.12 |
| 500 | 0.05 |
| 250 | 0.03 |
| 125 | 0.07 |
| 75 | 0.00 |
| <75 | 0.00 |
Applicant's summary and conclusion
- Conclusions:
- The main agglomerate size was found in the range of 4000 µm to 2000 µm.
- Executive summary:
In the present study the sieving test with different sizes of sieves was performed. It can be stated that the particles of R-Pantolactone form agglomerates. The measurement of the single particles was not possible. There were only few fractions with a size below 250 pm in the sieve test. The main agglomerate size was found in the range of 4000 µm to 2000 µm.
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