Registration Dossier
Registration Dossier
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EC number: 481-150-8 | CAS number: 500011-86-9
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: No guideline was followed, but study was GLP and generally followed the principles of OECD 110 (Particle Size Distribution/Fibre Length and Diameter Distributions).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 006
- Report date:
- 2006
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The particle size distribution of the test substance was determined using a Malvern Mastersizer 2000. The instrument was run in a general-purpose analysis model with enhanced sensitivity. The particle RI was set at 1.520 and the absorption was set at 0.1. The size range was measured from 0.02 to 2000 um with an obscuration of 1.33%. The instrument was shown to be operating correctly using sand as a reference sample.
- GLP compliance:
- yes (incl. QA statement)
- Type of distribution:
- volumetric distribution
Test material
- Reference substance name:
- DBC80
- IUPAC Name:
- DBC80
- Reference substance name:
- -
- EC Number:
- 481-150-8
- EC Name:
- -
- Cas Number:
- 500011-86-9
- Molecular formula:
- C9H5BrClN3O2
- IUPAC Name:
- 3-bromo-1-(3-chloropyridin-2-yl)-1H-pyrazole-5-carboxylic acid
- Reference substance name:
- 1H-Pyrazole-5-Carboxylic Acid, 3-Bromo-1-(3-Chloro-2-Pyridinyl)-
- IUPAC Name:
- 1H-Pyrazole-5-Carboxylic Acid, 3-Bromo-1-(3-Chloro-2-Pyridinyl)-
- Details on test material:
- - Name of test material (as cited in study report): IN-DBC80
- Molecular weight: 302.52 amu
- Analytical purity: 96.7 %
- Lot/batch No.: 008
Constituent 1
Constituent 2
Constituent 3
Results and discussion
Particle sizeopen allclose all
- Percentile:
- D50
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- Percentile:
- D50
- Mean:
- ca. 3.38 µm
- Percentile:
- D10
- Mean:
- ca. 0.816 µm
- Percentile:
- D90
- Mean:
- ca. 23.842 µm
Any other information on results incl. tables
The surface weighted mean particle size was determined to be 1.962 um. The volume weighted mean was determined to be 10.545 um. Based on volume (%), 90% of the particles were less than 23.842 um in size and 50% of the particles were less than 3.380 um in size.
Applicant's summary and conclusion
- Conclusions:
- The surface weighted mean particle size of the test substance was determined to be 1.962 um. The volume weighted mean particle size of the test substance was determined to be 10.545 um.
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