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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009-01-13 - 2009-02-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The GLP study was conducted according to an internationally accepted guideline. All study parameters are based on the specific guideline.
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
sedimentation (gravitational settling)
Type of distribution:
other: Length and Diameter Distribution
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
No.:
#1
Size:
115.54 µm
Distribution:
66.59 %
Remarks on result:
other: Stokes diameter
No.:
#2
Size:
80.36 µm
Distribution:
57.55 %
Remarks on result:
other: Stokes diameter
No.:
#3
Size:
55.86 µm
Distribution:
37.83 %
Remarks on result:
other: Stokes diameter
No.:
#4
Size:
38.81 µm
Distribution:
23.8 %
Remarks on result:
other: Stokes diameter
No.:
#5
Size:
26.95 µm
Distribution:
16.16 %
Remarks on result:
other: Stokes diameter
No.:
#6
Size:
18.7 µm
Distribution:
12.83 %
Remarks on result:
other: Stokes diameter
No.:
#7
Size:
15.46 µm
Distribution:
7.95 %
Remarks on result:
other: Stokes diameter
No.:
#8
Size:
12.56 µm
Distribution:
4.93 %
Remarks on result:
other: Stokes diameter
No.:
#9
Size:
11.75 µm
Distribution:
3.57 %
Remarks on result:
other: Stokes diameter
No.:
#10
Size:
10.74 µm
Distribution:
1.66 %
Remarks on result:
other: Stokes diameter
Conclusions:
The particle size distribution of N-[(3(5)-Methyl-1 H-pyrazol-1 -yl)-methyl]acetamide was determined according to OECD guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions). All measured values show good reproducibility, giving deviations of less than 10 % for each fraction when comparing the two main studies.
The particle size distribution shows not single peaks, but a continuous distribution roughly between 15 and 115 μm, leaving fractions of approx. 43% above 115 μm and less than 10% below 15 μm. No particles smaller than 10 μm were detected.
Executive summary:

The particle size distribution of N-[(3(5)-Methyl-1 H-pyrazol-1 -yl)-methyl]acetamide was determined according to OECD guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions). All measured values show good reproducibility, giving deviations of less than 10 % for each fraction when comparing the two main studies. The particle size distribution shows not single peaks, but a continuous distribution roughly between 15 and 115 μm, leaving fractions of approx. 43% above 115 μm and less than 10% below 15 μm. No particles smaller than 10 μm were detected.

Description of key information

The particle size distribution of N-[(3(5)-Methyl-1 H-pyrazol-1 -yl)-methyl]acetamide was determined according to OECD guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions). All measured values show good reproducibility, giving deviations of less than 10 % for each fraction when comparing the two main studies. The particle size distribution showed not single peaks, but a continuous distribution roughly between 15 and 115 μm, leaving fractions of approx. 43% above 115 μm and less than 10% below 15 μm. No particles smaller than 10 μm were detected.

Additional information

The particle size distribution of N-[(3(5)-Methyl-1 H-pyrazol-1 -yl)-methyl]acetamide showed not single peaks, but a continuous distribution roughly between 15 and 115 μm, leaving fractions of approx. 43% above 115 μm and less than 10% below 15 μm. No particles smaller than 10 μm were detected.