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EC number: 223-841-7 | CAS number: 4093-34-9
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:
- May 5, 2017
- 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
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 170
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- determination of fibre length and diameter distributions
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- Specific details on test material used for the study:
- STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature
- Stability under test conditions: yes - No.:
- #1
- Size:
- > 710 µm
- Distribution:
- 0.73 %
- No.:
- #2
- Size:
- > 500 - < 710 µm
- Distribution:
- 35 %
- No.:
- #3
- Size:
- > 250 - < 500 µm
- Distribution:
- 1 %
- No.:
- #4
- Size:
- > 125 - < 250 µm
- Distribution:
- 5.52 %
- No.:
- #5
- Size:
- > 75 - < 125 µm
- Distribution:
- 30.91 %
- No.:
- #6
- Size:
- > 63 - < 75 µm
- Distribution:
- 39.01 %
- No.:
- #7
- Size:
- > 45 - < 63 µm
- Distribution:
- 12.67 %
- No.:
- #8
- Size:
- < 45 µm
- Distribution:
- 9.83 %
- Conclusions:
- The average fraction size distribution for the test item was: over 710 μm: 0.73%, fraction 500 - 710 μm: 0.35%, fraction 250 -500 μm: 1.00%, fraction 125 - 250 μm: 5.52%, fraction 75 - 125 μm: 30.91%, fraction 63 - 75 μm: 39.01%, fraction 45 - 63 μm: 12.67%, under 45 μm: 9.83%.
- Executive summary:
The particle size of the tested substance was determined using a dry sieve test in accordance with OECD guideline 110 and CIPAC MT 170, following GLP. The tested material was weighed and transferred to clean and dry set of sieves ranging from 45 µm to 710 µm. The average fraction size distribution for the test item was: over 710 μm: 0.73%, fraction 500 - 710 μm: 0.35%, fraction 250 - 500 μm: 1.00%, fraction 125 - 250 μm: 5.52%, fraction 75 - 125 μm: 30.91%, fraction 63 - 75 μm: 39.01%, fraction 45 - 63 μm: 12.67%, under 45 μm: 9.83%.
Reference
Table 1. Results of particle size distribution.
|
Test no. 1 |
Test no. 2 |
Average |
||
|
[g] |
[%] |
[g] |
[%] |
[%] |
Over 710 µm |
0.62 |
0.52 |
1.12 |
0.93 |
0.73 |
Between 500 - 710 µm |
0.40 |
0.33 |
0.43 |
0.36 |
0.35 |
Between 250 - 500 µm |
1.27 |
1.06 |
1.13 |
0.94 |
1.00 |
Between 125 - 250 µm |
6.57 |
5.48 |
6.68 |
5.55 |
5.52 |
Between 75 - 125 µm |
38.56 |
32.16 |
35.67 |
29.66 |
30.91 |
Between 63 - 75 µm |
45.91 |
38.29 |
47.78 |
39.73 |
39.01 |
Between 45 - 63 µm |
15.46 |
12.89 |
14.96 |
12.44 |
12.67 |
Under 45 µm |
11.12 |
9.27 |
12.50 |
10.39 |
9.83 |
Sum of fractions “i” mass Σm1= 119.91 g; Sum of fractions “i” mass Σm2= 120.27 g
Description of key information
Key study: OECD 110 and CIPAC 170. GLP study. The average fraction size distribution for the test item was: over 710 μm: 0.73%, fraction 500 - 710 μm: 0.35%, fraction 250 - 500 μm: 1.00%, fraction 125 - 250 μm: 5.52%, fraction 75 - 125 μm: 30.91%, fraction 63 - 75 μm: 39.01%, fraction 45 - 63 μm: 12.67%, under 45 μm: 9.83%.
Additional information
Key study: The particle size of the tested substance was determined using a dry sieve test in accordance with OECD guideline 110 and CIPAC MT 170, following GLP. The tested material was weighed and transferred to clean and dry set of sieves ranging from 45 µm to 710 µm. The average fraction size distribution for the test item was: over 710 μm: 0.73%, fraction 500 - 710 μm: 0.35%, fraction 250 - 500 μm: 1.00%, fraction 125 - 250 μm: 5.52%, fraction 75 - 125 μm: 30.91%, fraction 63 - 75 μm: 39.01%, fraction 45 - 63 μm: 12.67%, under 45 μm: 9.83%.
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