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Registration Dossier
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EC number: 700-641-2 | CAS number: 1261240-30-5
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The test was conducted according to ECHA Guidance Chapter R.7A, R.7.1.14.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: ECHA Guidance Chapter R.7A, R7.1.14 Grnulometry, Table R.7.1-31
- Deviations:
- not specified
- Principles of method if other than guideline:
- Method: Laser scattering/diffraction
In general, the scattering of the incident light gives distinct pattern which are measured by a detector. This technique is particle property dependetnt – i.e. material has unique scattering and diffraction properties which are also particle size dependent. Laser scattering techniques are suitable for geometric particles, viz spheres, cubes and monocrystals. Particle size will be established optically.
Measure Instrument: GSL-101BI Laser Particle Size Distribution Analyzer - GLP compliance:
- no
- Type of method:
- Laser scattering/diffraction
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- 4-tert-butyl-2-(5-tert-butyl-2-oxo-2,3-dihydro-1-benzofuran-3-yl)phenyl 3,5-di-tert-butyl-4-hydroxybenzoate
- EC Number:
- 700-641-2
- Cas Number:
- 1261240-30-5
- Molecular formula:
- C37H46O5
- IUPAC Name:
- 4-tert-butyl-2-(5-tert-butyl-2-oxo-2,3-dihydro-1-benzofuran-3-yl)phenyl 3,5-di-tert-butyl-4-hydroxybenzoate
- Test material form:
- other: Crystalline powder
- Details on test material:
- Substance Name: 4-tert-butyl-2-(5-tert-butyl-2-oxo-2,3-dihydro-1-benzofuran-3-yl)phenyl 3,5-di-tert-butyl-4-hydroxybenzoate
EC No.: 700-641-2
IUPAC Name: 4-tert-butyl-2-(5-tert-butyl-2-oxo-2,3-dihydro-1-benzofuran-3-yl)phenyl 3,5-di-tert-butyl-4-hydroxybenzoate
CAS No. :1261240-30-5
CAS Name:[4-tert-butyl-2-(5-tert-butyl-2-oxo-3H-benzofuran-3-yl)phenyl] 3,5-ditert -butyl-4-hydroxy-benzoate
Trade name: REVONOX 501
Substance type: Mono-constituent substance
Purity: 99 –100 % (w/w)
Molecular formula: C37H46O5
Molecular Weight: 570.76
Impurities: It is not technically possible to identify them. Number of unknown impurities: 2Concentration range: 0-1 % (w/w)
Aggregate state at room temperature: Solid (form: crystalline powder)
Colour: White
Odour: Odourless
Storage conditions: Keep container tightly closed in a dry, cool and well-ventilated place against strong oxidizers when not in use and during transport, prevent contamination with foreign materials. Keep chemical away from direct sunlight, heat, sparks, open flame and other ignition sources. Keep away from food and drink. Store in the original container securely closed. Protect from moisture and physical damage.
Constituent 1
Results and discussion
Particle sizeopen allclose all
- Key result
- Percentile:
- D10
- Mean:
- 43.99 µm
- St. dev.:
- 0
- Remarks on result:
- other: no data related to St.dev.
- Key result
- Percentile:
- D50
- Mean:
- 103.38 µm
- St. dev.:
- 0
- Remarks on result:
- other: no data related to St.dev.
- Key result
- Percentile:
- D90
- Mean:
- 221.5 µm
- St. dev.:
- 0
- Remarks on result:
- other: no data related to St.dev.
Particle size distribution at different passagesopen allclose all
- No.:
- #1
- Size:
- >= 0.2 - <= 20 µm
- Distribution:
- 0.75 %
- No.:
- #2
- Size:
- >= 20 - <= 37 µm
- Distribution:
- 5.04 %
- No.:
- #3
- Size:
- >= 37 - <= 44 µm
- Distribution:
- 4.23 %
- No.:
- #4
- Size:
- >= 44 - <= 60 µm
- Distribution:
- 17.24 %
- No.:
- #5
- Size:
- >= 60 - <= 74 µm
- Distribution:
- 11.79 %
- No.:
- #6
- Size:
- >= 74 - <= 149 µm
- Distribution:
- 28.09 %
- No.:
- #7
- Size:
- >= 149 - <= 200 µm
- Distribution:
- 17.17 %
- No.:
- #8
- Size:
- >= 200 - <= 350 µm
- Distribution:
- 15.61 %
Applicant's summary and conclusion
- Conclusions:
- D50 of the test substance: 103.38 µm.
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