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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:
2018-04-12 to 2018-07-30
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:
1981
Deviations:
no
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7520 (Particle Size, Fiber Length, and Diameter Distribution)
Version / remarks:
1996
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
Laser scattering/diffraction
Percentile:
D10
Mean:
2.3 µm
Remarks on result:
other: Average value (two test series of 3 measurements each were performed)
Key result
Percentile:
D50
Mean:
9.6 µm
Remarks on result:
other: Average value (two test series of 3 measurements each were performed)
Percentile:
D90
Mean:
23.8 µm
Remarks on result:
other: Average value (two test series of 3 measurements each were performed)
Remarks on result:
other: Result not yet available

Particle Size Distribution

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

Test series 1:

D10: 2.3 µmn

D50: 9.5 µm (Median diameter)

D90: 23.6 µm

Test series 2:

D10: 2.3 µm

D50: 9.6 µm (Median diameter)

D90: 24.0 µm

Average:

D10: 2.3 µm

D50: 9.6 µm (Median diameter)

D90: 23.8 µm

Conclusions:
The test item Basic Red 1 has a median particle size D50 = 10 µm, which was determined by laser diffraction measurement according to ISO 13320 (2009).
Executive summary:

The particle size distribution of the test item was determined by laser diffraction according to OECD guideline 110 (1981), EPA OPPTS 830.7520 (1996) and ISO 13320 (2009). Two test series of 3 measurements each were performed with the test item. For the test item a D10, D50 and D90 of 2.3 µm, 9.6 µm and 23.8 µm were determined, respectively (average).

Description of key information

The test item Basic Red 1 has a median particle size D50 = 10 µm, which was determined by laser diffraction measurement according to ISO 13320 (2009).

Additional information

The particle size distribution of the test item was determined by laser diffraction according to OECD guideline 110 (1981), EPA OPPTS 830.7520 (1996) and ISO 13320 (2009). Two test series of 3 measurements each were performed with the test item. For the test item a D10, D50 and D90 of 2.3 µm, 9.6 µm and 23.8 µm were determined, respectively (average).