Registration Dossier
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EC number: 422-460-5 | CAS number: 137234-87-8 UK-103,442
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:
- From 1998-11-13 to 1999-03-03
- 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 A: Particle Size Distribution (effective hydrodynamic radius)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- microscopic examination
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- Specific details on test material used for the study:
- Batch No.: 960509
Purity: 92.3% - Size:
- > 125 µm
- Distribution:
- 16.5 %
- Remarks on result:
- other: image analysis
- Size:
- > 105 - <= 125 µm
- Distribution:
- 23 %
- Remarks on result:
- other: image analysis
- Size:
- > 60 - <= 105 µm
- Distribution:
- 33.7 %
- Remarks on result:
- other: image analysis
- Size:
- > 30 - <= 60 µm
- Distribution:
- 21.2 %
- Remarks on result:
- other: image analysis
- Size:
- > 10.4 - <= 30 µm
- Distribution:
- 4.7 %
- Remarks on result:
- other: image analysis
- Size:
- > 0.5 - <= 10.4 µm
- Distribution:
- 0.9 %
- Remarks on result:
- other: image analysis
- Conclusions:
- The results indicate that 0.9% by mass of test item is smaller than 10 μm.
- Executive summary:
The particle size distribution was initially examined using sieve analysis. As greater than 10% by weight of the test substance was found to pass a 75 micron sieve, it was further examined image analysis based upon the procedure described in OECD 110.
The results indicate that 0.9% by mass of test item is smaller than 10 μm.
- 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:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Substance sieved using different sizes of seive.
- GLP compliance:
- not specified
- Type of method:
- sieving
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- No.:
- #1
- Size:
- > 300 µm
- Distribution:
- ca. 19.6 %
- No.:
- #2
- Size:
- >= 150 - <= 300 µm
- Distribution:
- ca. 73.2 %
- No.:
- #3
- Size:
- >= 106 - <= 150 µm
- Distribution:
- ca. 7.2 %
- No.:
- #4
- Size:
- <= 106 µm
- Distribution:
- ca. 0 %
- Remarks on result:
- other: Aggregate of 5 zero results
- Conclusions:
- 19.6 % sample found to be > 300 μm, 73.2% in the range of 150-300 μm, 7.2 % in the range of 106-150 μm.
- Executive summary:
The particle size of test substance was determined by seiving using different sizes of seive.
19.6 % sample found to be > 300 μm, 73.2% in the range of 150-300 μm, 7.2 % in the range of 106-150 μm.
Referenceopen allclose all
Sieve analysis data:
> 400 μm: 1.6%
125 - 400 μm: 16.3%
75- 125 μm: 26.3%
30 - 75 μm: 51.7%
10 - 30 μm: 4.2%
< 10 μm: 0%
Description of key information
Key study:
The particle size distribution was initially examined using sieve analysis. As greater than 10% by weight of the test substance was found to pass a 75 micron sieve, it was further examined image analysis based upon the procedure described in OECD 110.
The results indicate that 0.9% by mass of test item is smaller than 10 μm.
Supporting study:
The particle size of test substance was determined by seiving using different sizes of seive.
19.6 % sample found to be > 300 μm, 73.2% in the range of 150-300 μm, 7.2 % in the range of 106-150 μm.
Additional information
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