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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:
2015-12-08 to 2016-03-07
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Version / remarks:
adpopted 1981
Deviations:
no
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Version / remarks:
adopted 2009
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
mass based distribution
Mass median aerodynamic diameter:
50.1 µm
Key result
Percentile:
D10
Mean:
8.1 µm
Remarks on result:
other: standard deviation not specified
Key result
Percentile:
D50
Mean:
50.1 µm
Remarks on result:
other: standard deviation not specified
Key result
Percentile:
D90
Mean:
125.5 µm
Remarks on result:
other: standard deviation not specified

Two  test  series  of 3  measurements  each  were  performed  with  the fine  fraction  of the  test item.

Test series 1:

D10:  8.0 µm

D50: 49.2 µm (Median diameter)

D90: 123.5 µm

Test series 2:

D10:  8.2 µm

D50:  51.1 µm  (Median diameter)

D90:  127.4 µm

Average

D10:  8.1 µm

D50:  50.1 µm  (Median diameter)

D90:  125.5 µm

Conclusions:
In the present study the particle size distribution of the test substance was determined using laser diffraction. The powder is brought via a powder dispersing cell into the laser light beam and the diffraction pattern is determined. From the diffraction pattern the particle size distribution was calculated. The test item has a median particle size D50 = 50.1 µm.

Description of key information

In the present study the particle size distribution of the test substance was determined using laser diffraction. The test item has a median particle size D50 = 50.1 µm.

Additional information

In a study according to OECD guideline 110, (1981) the particle size distribution of 2,4 -Bismaleimidotoluene was determined using laser diffraction. The powder is brought via a powder dispersing cell into the laser light beam and the diffraction pattern is determined. Two  test  series  of 3  measurements  each  were  performed  with  the fine  fraction  of the test item. From the diffraction pattern the particle size distribution was calculated. The test item has a median particle size D50 = 50.1 µm.