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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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
GLP compliance:
yes
Type of method:
electrical sensing zone (e.g. Coulter) method
Type of particle tested:
primary particle
Type of distribution:
counted distribution
Mass median aerodynamic diameter:
ca. 82.06 µm
Key result
Percentile:
other: 16.79 %
Mean:
> 200 µm
Remarks on result:
other: St. dev. not given
Key result
Percentile:
other: 1.13 %
Mean:
< 2 µm
Remarks on result:
other: St. dev. not given

The results obtained showed that the mass median diameter (assuming a density of 1) is 82.06 µm and that particles covered the range 0.73 µm to 413.6 µm. 16.79 % of the sample had particles over 200 µm in diameter and only 1.13 % was below 2 µm in diameter.

Conclusions:
The mass median diameter of the test substance is 82.06 µm.
Executive summary:

The particle size destribution was determined according to OECD guideline 110A (for particle size Coulter Counter) (Huntingdon, ECHA RSS, 2017). The results obtained showed that the mass median diameter (assuming a density of 1) is 82.06 µm and that particles covered the range 0.73 µm to 413.6 µm. 16.79 % of the sample had particles over 200 µm in diameter and only 1.13 % were below 2 µm in diameter.

Description of key information

Mass median diameter = 82.06 µm (assuming a density of 1)

Additional information

The particle size distribution was determined according to OECD guideline 110 (for particle size Coulter Counter) (Huntingdon, ECHA RSS, 2017). The results obtained showed that the mass median diameter (assuming a density of 1) is 82.06 µm and that particles covered the range 0.73 µm to 413.6 µm. 16.79 % of the sample had particles over 200 µm in diameter and only 1.13 % was below 2 µm in diameter.