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EC number: 939-704-6 | 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:
- 24 August 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 66165
- GLP compliance:
- no
- Type of method:
- sieving
- Type of distribution:
- other: diameter
- Percentile:
- D50
- Mean:
- > 5 000 µm
- Remarks on result:
- other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
- No.:
- #1
- Size:
- > 125 µm
- Distribution:
- 4.5 %
- No.:
- #2
- Size:
- >= 125 - < 500 µm
- Distribution:
- 7.3 %
- No.:
- #3
- Size:
- >= 500 - < 1 000 µm
- Distribution:
- 1.7 %
- No.:
- #4
- Size:
- >= 1 000 - < 1 400 µm
- Distribution:
- 1 %
- No.:
- #5
- Size:
- >= 1 400 - < 2 000 µm
- Distribution:
- 2 %
- No.:
- #6
- Size:
- >= 2 000 - < 3 150 µm
- Distribution:
- 4.7 %
- No.:
- #7
- Size:
- >= 3 150 - 4 000 µm
- Distribution:
- 9.45 %
- No.:
- #8
- Size:
- >= 4 000 - < 5 000 µm
- Distribution:
- 10.89 %
- No.:
- #9
- Size:
- > 5 000 µm
- Distribution:
- 68.4 %
- Executive summary:
In the non-GLP Klimisch 1 study from Bütfering (2012) the particle size distribution of Aspartic acid, N-(3-carboxy-1-oxo-sulfopropyl)-N-(C16-18 (even numbered), C18 unsaturated alkyl) tetrasodium salts was determined using sieving method with mesh sizes ranging from 125 to 5000 µm. In total 135.18 g of the test item was sieved through meshes. The mass median diameter (MMD) of the test item is calculated as > 5000 µm.
This study is considered relevant for the risk assessment.
Reference
X10 : 408 µm
X50 : > 5000 µm
X90 : > 5000 µm
Description of key information
mass median diameter (MMD) : > 5000 µm
Additional information
In the non-GLP Klimisch 1 study from Bütfering (2012) the particle size distribution of Aspartic acid, N-(3-carboxy-1-oxo-sulfopropyl)-N-(C16-18 (even numbered), C18 unsaturated alkyl) tetrasodium salts was determined using sieving method with mesh sizes ranging from 125 to 5000 µm. In total 135.18 g of the test item was sieved through meshes. The mass median diameter (MMD) of the test item is calculated as > 5000 µm. This study is considered relevant for the risk assessment.
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