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EC number: 947-384-4 | 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:
- November 16, 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 59
- Principles of method if other than guideline:
- - Principle of test: Testing was performed according to the Collaborative International Pesticides Analytical Council Handbook, MT 59, Sieve Analysis. Wet sieve analysis consists of quantitative separation of a solid mixture into fractions with different ranges of particle size using appropriate seives, incorporating water as the principle aid to move particulate matter through the sieve array.
- Short description of test conditions: The test substance was mixed with water to create a suspension, and this suspension was rinsed over a set of 10 sieves, with the sieve with the largest mesh size on top, and progressively smaller mesh sizes beneath it.
- Parameters analysed / observed: Amount of substance that accumulated on each sieve. - GLP compliance:
- yes
- Type of method:
- sieving
- Type of particle tested:
- other: Suspension containing particles
- Type of distribution:
- mass based distribution
- No.:
- #1
- Size:
- >= 9.5 mm
- Distribution:
- 40.4 %
- No.:
- #2
- Size:
- >= 5.6 - < 9.5 mm
- Distribution:
- 51.7 %
- No.:
- #3
- Size:
- >= 4 - < 5.6 mm
- Distribution:
- 5.1 %
- No.:
- #4
- Size:
- >= 2.8 - < 4 mm
- Distribution:
- 3.7 %
- No.:
- #5
- Size:
- >= 1 - < 2.8 mm
- Distribution:
- 2.1 %
- No.:
- #6
- Size:
- >= 0.71 - < 1 mm
- Distribution:
- 0.1 %
- No.:
- #7
- Size:
- >= 0.355 - < 0.71 mm
- Distribution:
- 0.1 %
- No.:
- #8
- Size:
- >= 0.25 - < 0.355 mm
- Distribution:
- 0.1 %
- No.:
- #9
- Size:
- >= 0.18 - < 0.25 mm
- Distribution:
- 0 %
- No.:
- #10
- Size:
- >= 0.02 - < 0.18 mm
- Distribution:
- 0.1 %
- Conclusions:
- Over 90% of the substance had a particle diameter of > 5.6 mm, with 100% having a particle diameter of greater than 1.0 mm. Negligible amount of the material had a size less then 20 microns.
- Executive summary:
The particle size of the test substance was determined using a "wet sieve" analysis. The particle size of three samples was determined. Over 90% of the substance had a particle diameter of > 5.6 mm, with 100% having a particle diameter of greater than 1.0 mm. Negligible amount of the material had a size less then 20 microns.
Reference
No sieve clogging was observed. The mean weight recovery was 104%.
Description of key information
=> 9.5 mm: 40.4 %
=> 5.6 - < 9.5 mm: 51.7%
=> 4.0 - < 5.6 mm: 5.1%
=> 2.8 - < 4.0 mm: 3.7%
=> 1.0 - < 2.8 mm: 2.1%
according to CIPAC MT 59, Sieve Analysis
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