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EC number: - | CAS number: -
Particle size distribution (Granulometry)
Administrative data
- Endpoint:
- particle size distribution (granulometry)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
Materials and methods
Test guidelineopen allclose all
- 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
- Qualifier:
- according to guideline
- Guideline:
- other: image analysis based on BS3406, Part 4, 1993
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- sieving
- Type of distribution:
- volumetric distribution
Test material
- Details on test material:
- - Name of test material (as cited in study report): WS400517
- Physical state: Off-white to pale yellow powder
- Analytical purity: Not applicable (complex mixture)
- Lot/batch No.: HH-09-168
- Expiration date of the lot/batch: 21 January 2011
- Storage condition of test material: Room temperature in the dark
Constituent 1
Results and discussion
Particle size
- Key result
- Percentile:
- other: 0.3% was below 10 µm
- Mean:
- >= 0.1 - <= 0.4 other: %
- St. dev.:
- 0.121
- Remarks on result:
- other: for details see Table 1 in Any other information on results
Any other information on results incl. tables
Table 1: Results of Image Analysis
Particle size |
% Mass |
|||||||
(µm) |
Test 1 |
Test 2 |
Test 3 |
Test 4 |
Test 5 |
Test 6 |
Mean |
Stdev |
>125 (sieved) |
69.8 |
67.5 |
67.0 |
66.0 |
68.0 |
66.3 |
67.4 |
1.375 |
105-130 |
6.6 |
7.0 |
3.3 |
5.0 |
6.6 |
7.8 |
6.1 |
1.627 |
60.0-105 |
15.4 |
13.3 |
14.6 |
12.5 |
13.7 |
12.0 |
13.6 |
1.273 |
30.0-60.0 |
6.0 |
9.5 |
9.8 |
11.4 |
7.7 |
9.7 |
9.0 |
1.888 |
10.4-30.0 |
2.0 |
2.5 |
4.9 |
4.7 |
3.8 |
3.8 |
3.6 |
1.162 |
0.5-10.4 |
0.1 |
0.2 |
0.4 |
0.4 |
0.2 |
0.3 |
0.3 |
0.121 |
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The observed particles were irregular and crystalline in nature.
The results indicated that 0.3% w/w of the test material was smaller than 10 µm.
Applicant's summary and conclusion
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