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EC number: 234-541-0 | CAS number: 12008-41-2
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:
- 15 JUN 2010 to 16 JUN 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- ISO 13320 (Particle size analysis - Laser diffraction methods)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 187
- Deviations:
- not specified
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions) - Method B: Fibre Length and Diameter Distributions
- Deviations:
- not specified
- GLP compliance:
- yes
- Type of method:
- other: Optical microscope analysis and Laser diffraction particle size analysis
- Type of distribution:
- volumetric distribution
- Percentile:
- D50
- Mean:
- 12.729 µm
- St. dev.:
- 0.59
- Conclusions:
- In particle size distribution analysis 41.27 % by volume of the sample was seen to be < 10.00 μm. Coefficient of variation for d50 was less than 3 %; d10 and d90 were less than 5 %. Thus repeatability of the characteristic particles in the size distribution were within the acceptable limits as per the BS ISO 13320 -1 test standard.
- Executive summary:
The particle size distribution of the test item was assessed in a guideline study (OECD 111, ISO 13320, CIPAC MT 187) according to GLP by laser diffraction method. The test item has a d50 of 12.729 µm, a d90 of 46.122 µm and a d10 of 2.788 µm.
Reference
Full test results: All results are in μm.
|
Run 1 |
Run 2 |
Run 3 |
Run 4 |
Run 5 |
* Average |
Volume weighted mean |
19.301 |
20.109 |
19.865 |
19.231 |
19.183 |
19.538 |
Median (d.50) |
12.651 |
12.839 |
12.802 |
12.675 |
12.686 |
12.729 |
Mode (μm) |
13.299 |
13.012 |
13.108 |
13.214 |
13.299 |
13.189 |
10 % of material is < |
2.781 |
2.782 |
2.786 |
2.787 |
2.802 |
2.788 |
50 % of material is < |
12.651 |
12.839 |
21.802 |
12.675 |
12.686 |
12.729 |
90 % of material is < |
45.622 |
47.888 |
47.008 |
45.151 |
45.009 |
46.122 |
* Average value was calculated from the entirety of data captured in each run and is not a simple arithmetic mean.
41.27 % by volume of the sample was seen to be < 10.00 μm.
Standard deviation results:
|
Run 1 |
Run 2 |
Run 3 |
Run 4 |
Run 5 |
Stdev |
%STDV |
d10 |
2.781 |
2.782 |
2.786 |
2.787 |
2.802 |
0.01 |
0.27 |
d50 |
12.351 |
12.839 |
12.802 |
12.675 |
12.686 |
0.08 |
0.59 |
d90 |
45.622 |
47.888 |
47.008 |
45.151 |
45.009 |
1.13 |
2.44 |
d15.78 |
58.110 |
57.380 |
57.540 |
58.070 |
58.060 |
0.31 |
0.53 |
GSD |
0.218 |
0.224 |
0.222 |
0.218 |
0.218 |
0.00 |
1.13 |
Coefficient of variation for d50 was less than 3 %; d10 and d90 were less than 5 %. Thus repeatability of the characteristic particles in the size distribution were within the acceptable limits as per the BS ISO 13320 -1 test standard.
Description of key information
The particle size distribution of the test item was assessed in a guideline study (OECD 111, ISO 13320, CIPAC MT 187) according to GLP by laser diffraction method. The test item has a d50 of 12.729 µm, a d90 of 46.122 µm and a d10 of 2.788 µm.
Additional information
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