Registration Dossier
Registration Dossier
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EC number: 204-729-7 | CAS number: 125-20-2
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
- Version / remarks:
- 1981
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Version / remarks:
- 2009
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
- Version / remarks:
- 1996
- Deviations:
- no
- Guideline:
- other: CIPAC MT 187: Particle Size Analysis by Laser Diffraction
- Version / remarks:
- 2009
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- 3,3-bis(4-hydroxy-5-isopropyl-o-tolyl)phthalide
- EC Number:
- 204-729-7
- EC Name:
- 3,3-bis(4-hydroxy-5-isopropyl-o-tolyl)phthalide
- Cas Number:
- 125-20-2
- Molecular formula:
- C28H30O4
- IUPAC Name:
- 3,3-bis(4-hydroxy-5-isopropyl-o-tolyl)phthalide
- Test material form:
- solid: particulate/powder
- Details on test material:
- - Storage conditions: Room Temperature (20 ± 5 °C)
- Expiry date: 12/16/19
1
Results and discussion
Particle sizeopen allclose all
- Key result
- Percentile:
- D50
- Mean:
- 20.2 µm
- St. dev.:
- 0.19
- Percentile:
- D10
- Mean:
- 2.4 µm
- St. dev.:
- 0.02
- Percentile:
- D90
- Mean:
- 97.5 µm
- St. dev.:
- 1.27
Applicant's summary and conclusion
- Conclusions:
- The study was performed in accordance with generally accepted scientific standards and described in sufficient detail and therefore reliability of Klimisch 1 has been assigned. Result: D50 = 20.2 µm
- Executive summary:
The particle size distribution of the test item 3,3-bis(4-hydroxy-5-isopropyl-o-tolyl)phthalide was determined by laser light scattering, according to OECD Guideline 110 (and ISO 13320 and OPPTS 830.7520). The test material has a median particle size of D50 = 20.2 µm.
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