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EC number: 206-696-4 | CAS number: 367-51-1
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:
- 2010-04-20 - 2010-04-21
- 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)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Type of distribution:
- mass based distribution
- No.:
- #1
- Size:
- > 108 µm
- Distribution:
- ca. 26.44 %
- No.:
- #2
- Size:
- >= 64.97 - ca. 107.85 µm
- Distribution:
- ca. 15.04 %
- No.:
- #3
- Size:
- >= 45.16 - <= 64.97 µm
- Distribution:
- ca. 15.53 %
- No.:
- #4
- Size:
- > 30.81 - <= 45.16 µm
- Distribution:
- ca. 17.35 %
- No.:
- #5
- Size:
- >= 20.96 - <= 30.81 µm
- Distribution:
- ca. 13.55 %
- No.:
- #6
- Size:
- >= 10.05 - <= 20.96 µm
- Distribution:
- ca. 7.93 %
- No.:
- #7
- Size:
- >= 1 - <= 10.05 µm
- Distribution:
- ca. 3.96 %
- Conclusions:
- All measured values show good reproducibility, giving deviations of less than 10% within the three determinations
The graphs of the particle size distribution show that a considerable aliquot of 4%w/w particles smaller than 10µm is present in the test material.
No observations wer made which might caus doubts concerning the validity of the study result. Therefore the result can be considered valid.
Reference
Description of key information
Partice size distribution was determined according to ISO 13327-2 (OECD 110; fixed pipette method).
Additional information
particle distribution table
Stokes-diameter in µm |
Mass under particle size |
Mass under particle size |
Mass under particle size |
Mass under particle size |
Difference |
Mass under particle size |
|
meas. part |
meas. part |
meas. part |
meas. part |
|
total test item |
107.85 |
89.08% |
81.92% |
81.36% |
84.12% |
7.72% |
73.36% |
64.97 |
71.84% |
63.28% |
65.54% |
66.88% |
8.56% |
58.32% |
45.16 |
49.43% |
45.76% |
51.98% |
49.06% |
6.21% |
42.79% |
36.23 |
35.63% |
31.64% |
40.68% |
35.98% |
9.04% |
31.39% |
30.81 |
24.71% |
28.81% |
33.90% |
29.14% |
9.19% |
25.44% |
24.68 |
20.69% |
20.34% |
24.86% |
21.96% |
4.52% |
19.16% |
20.96 |
9.77% |
14.69% |
16.38% |
13.61% |
6.61% |
11.89% |
14.52 |
6.90% |
8.47% |
9.04% |
8.14% |
2.14% |
7.10% |
10.05 |
2.30% |
5.08% |
6.21% |
4.53% |
3.92% |
3.96% |
6.95 |
1.15% |
3.39% |
4.52% |
3.02% |
3.37% |
2.64% |
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