Registration Dossier
Registration Dossier
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EC number: 201-210-7 | CAS number: 79-50-5
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Study period:
- 10-Dec-2009
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- expert statement - scientifically justified. RS-Pantolactone is an agglomerating solid and appears as one big hunk. To measure any particle size distribution experimentally, the hunk must be pulverized. This is impossible without altering the particle size distribution. Therefore no particle size distribution could be determined.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
- Principles of method if other than guideline:
- expert statement - testing not possible.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- RS-Pantolactone
- IUPAC Name:
- RS-Pantolactone
- Details on test material:
- Identification: RS-Pantolactone
Batch Number: Bx TL 00905003
Purity: 99.7 %
Appearance: Waxy Solid, white
Expiry Date
(as given by the sponsor):
May 2011
Expiry Date
(handled at Harlan Laboratories):
May 31, 2011
Storage Conditions: At room temperature at about 20 °C
Constituent 1
Results and discussion
Particle size
- Percentile:
- D50
- Mean:
- other:
- 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
RS-Pantolactone is an agglomerating solid and appears as one big hunk. To measure any particle size distribution experimentally, the hunk must be pulverized. This is impossible without altering the particle size distribution. Therefore no particle size distribution could be determined.
Applicant's summary and conclusion
- Conclusions:
- RS-Pantolactone is an agglomerating solid. It is impossible to determine an unaltered particle size distribution experimentally.
- Executive summary:
RS-Pantolactone is an agglomerating solid. It is impossible to determine an unaltered particle size distribution experimentally.
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