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EC number: 275-833-8 | CAS number: 71675-87-1
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:
- 24 October 2014 - 27 October 2014
- 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:
- Laser scattering/diffraction
- Type of particle tested:
- primary particle
- Type of distribution:
- mass based distribution
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Name of test material (as cited in study report):4-amino-5(ethylsulphonyl)-o-anisic acid
- Physical state:Solid
- Analytical purity: 99.81%
- Lot/batch numberl:MP1032.31 - Mass median aerodynamic diameter:
- ca. 85.82 µm
- Key result
- Percentile:
- other: d4,3
- Mean:
- ca. 85.82 µm
- Remarks on result:
- other: Mass median aerodynamic diameter(De Brouckere Mean Diameter)
- No.:
- #1
- Size:
- > 500 µm
- Distribution:
- 0.43 %
- Remarks on result:
- other: Average of 2 tests
- No.:
- #2
- Size:
- >= 300 - <= 500 µm
- Distribution:
- 1.08 %
- Remarks on result:
- other: Average of 2 tests
- No.:
- #3
- Size:
- >= 250 - <= 300 µm
- Distribution:
- 2.51 %
- Remarks on result:
- other: Average of 2 tests
- No.:
- #4
- Size:
- >= 125 - <= 250 µm
- Distribution:
- 15.54 %
- Remarks on result:
- other: Average of 2 tests
- No.:
- #5
- Size:
- >= 75 - <= 125 µm
- Distribution:
- 5.16 %
- Remarks on result:
- other: Average of 2 tests
- No.:
- #6
- Size:
- >= 63 - <= 75 µm
- Distribution:
- 16.19 %
- Remarks on result:
- other: Average of 2 tests
- No.:
- #7
- Size:
- >= 45 - <= 63 µm
- Distribution:
- 30.92 %
- Remarks on result:
- other: Average of 2 tests
- No.:
- #8
- Size:
- < 45 µm
- Distribution:
- 28.19 %
- Remarks on result:
- other: Average of 2 tests
- Conclusions:
- The average d4,3, the mass moment mean (De Brouckere Mean Diameter), was determined to be 85.82 μm.
- Executive summary:
The determination of particle size distribution was carried out using dry sieve test in accordance with OECD Guideline 110 and CIPAC MT 170.
The average d4,3, the mass moment mean (De Brouckere Mean Diameter), was determined to be 85.82 μm. The obtained particle size distribution was as follows (two replicates): over 500 μm: 0.43 %, fraction 300 - 500 μm: 1.08 %, fraction 250 - 300 μm: 2.51 %, fraction 125 - 250 μm: 15.54 %, fraction 75 - 125 μm: 5.16 %, fraction 63 - 75 μm: 16.19 %, fraction 45 - 63 μm: 30.92 %, under 45 μm: 28.19 %.
Reference
Table No.1 :Results of particle size distribution
Fraction size |
Test no. 1 |
Test no. 2 |
Average |
||
[g] |
[%] |
[g] |
[%] |
[%] |
|
Over 500μm |
0.27 |
0.28 |
0.56 |
0.58 |
0.43 |
Between 300-500μm |
0.93 |
0.97 |
1.13 |
1.18 |
1.08 |
Between 250-300μm |
2.51 |
2.61 |
2.31 |
2.41 |
2.51 |
Between 125-250μm |
15.31 |
15.93 |
14.50 |
15.14 |
15.54 |
Between 75-125μm |
5.65 |
5.88 |
4.25 |
4.44 |
5.16 |
Between 63-75μm |
15.53 |
16.16 |
15.52 |
16.21 |
16.19 |
Between 45-63μm |
29.44 |
30.64 |
29.87 |
31.19 |
30.92 |
Under 45 μm |
29.44 |
27.52 |
27.63 |
28.85 |
28.19 |
Sum of fractions „i” mass Σm1 = 96.08 g
Sum of fractions „i” mass Σm2 = 95.77 g
ΣXi=(Σmi/mc)*100%
The average d4,3 – the mass moment mean (De Brouckere Mean Diameter) calculated
according to:
d4.3= Σxidi
Where:
di : the average of the lower and upper sieves
xi : i - mass fraction
The average equivalent diameter was 85.82 μm.
Description of key information
Key study: Test method CIPAC MT 170 and OECD 110. GLP study. The average d4,3, the mass moment mean (De Brouckere Mean Diameter), was determined to be 85.82 μm.
Additional information
Key study: The determination of particle size distribution was carried out using dry sieve test in accordance with CIPAC MT 170 and OECD Guideline 110. The average d4,3, the mass moment mean (De Brouckere Mean Diameter), was determined to be 85.82 μm. The obtained particle size distribution was as follows (two replicates): over 500 μm: 0.43 %, fraction 300 - 500 μm: 1.08 %, fraction 250 - 300 μm: 2.51 %, fraction 125 - 250 μm: 15.54 %, fraction 75 - 125 μm: 5.16 %, fraction 63 - 75 μm: 16.19 %, fraction 45 - 63 μm: 30.92 %, under 45 μm: 28.19 %.
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