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EC number: 952-948-8 | CAS number: -
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 20 November 2019 to 26 March 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- Specific details on test material used for the study:
- Purity: 94.5 %
Storage Condition: Ambient temperature, cool and dry conditions, DEFITRACES. - No.:
- #1
- Size:
- 25 µm
- Distribution:
- 0 %
- No.:
- #2
- Size:
- 32 µm
- Distribution:
- 0 %
- No.:
- #3
- Size:
- 45 µm
- Distribution:
- 0.1 %
- No.:
- #4
- Size:
- 63 µm
- Distribution:
- 1.09 %
- No.:
- #5
- Size:
- 90 µm
- Distribution:
- 4.52 %
- No.:
- #6
- Size:
- 125 µm
- Distribution:
- 2.8 %
- No.:
- #7
- Size:
- 180 µm
- Distribution:
- 3.28 %
- No.:
- #8
- Size:
- 250 µm
- Distribution:
- 3.68 %
- No.:
- #9
- Size:
- 355 µm
- Distribution:
- 5.18 %
- No.:
- #9
- Size:
- 500 µm
- Distribution:
- 5.82 %
- No.:
- #10
- Size:
- 710 µm
- Distribution:
- 2.27 %
- Conclusions:
- After the preliminary test, it was shown that the majority of the particles (99.9%) was between the receiver pan and 1 mm. So, the principal sieving was made lower than 1 mm.
After the main test, it was shown that the majority of the particles was between 45 μm and 710 μm (refer to graph attached). - Executive summary:
Particle size distribution is determined by manual and mechanical sieving. Preliminary test was performed to determine the aperture size of the sieves. Main test was performed on each fraction of the test item obtained by the preliminary test. The fraction were subdivided with test sieves of different aperture sizes and the particle size distribution of the test item is calculated.
It was shown that the majority of the particles was between 45 μm and 710 μm.
Reference
Mass loss during sieving process: approx. 1.8%.
Description of key information
Sieving test of 3-Bromo-1-(3-Chloro-2-Pyridyl)-5-Methyl-1H-Pyrazole showed major fraction of particles was between 45 μm and 710 μm.
Additional information
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