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Physical & Chemical properties

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:
test procedure in accordance with national standard methods with acceptable restrictions
Qualifier:
no guideline followed
Principles of method if other than guideline:
Laser particle sizer Malvern with unit dry Scirocco 2000
GLP compliance:
not specified
Type of method:
sieving
Type of distribution:
counted 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:
< 100 µm
Distribution:
ca. 42 %
Conclusions:
Particle size distribution indicates substance is an inhalation risk (a significant proportion of the particles are present at < 100 µm). This study is considered to be scientifically justified for use as a key study.

Description of key information

The key data are taken from company data supplied by the lead registrant. 

Additional information

Particle size distribution indicates substance is an inhalation risk (a significant proportion of the particles are present at < 100 µm). This study is considered to be scientifically justified for use as a key study.