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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:
04.08.2017
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 B: Fibre Length and Diameter Distributions
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of particle tested:
primary particle
Type of distribution:
volumetric distribution
Key result
Percentile:
D50
Mean:
33 µm
Remarks on result:
other: no SD indicated
Percentile:
D10
Mean:
7 µm
Remarks on result:
other: no SD indicated
Percentile:
D90
Mean:
115 µm
Remarks on result:
other: no SD indicated

The median particle size D50 (D (v, 0.5): 50 % of particle volume or particle mass with lower particle diameter) deduced from these distributions is: D50 = 33.2 µm.

The particle size D10 (D (v, 0.1): 10% of particle volume or particle mass with lower particle diameter) deduced from these distributions is: D10 = 7.4 µm.

The particle size D90 (D (v, 0.9): 90 % of particle volume or particle mass with lower particle diameter) deduced from these distributions is:D90 = 115.3 µm.

A standard deviation is not given in the report.

Conclusions:
The mean particle size D50 of the test item was 33 µm.
Executive summary:

A study was conducted according to OECD TG 110, CIPAC MT 187 and ISO 13320 to determine the particle size distribution of the test item. The particle size distribution was determined using laser diffraction. The test item has a median particle size D50 = 33 µm, which was determined by laser diffraction measurement.

Description of key information

The mean particle size D50 of the test item was 33 µm (reference 4.5-1).

Additional information

A study was conducted according to OECD TG 110, CIPAC MT 187 and ISO 13320 to determine the particle size distribution of the test item. The particle size distribution was determined using laser diffraction. The test item has a median particle size D50 = 33 µm, which was determined by laser diffraction measurement.