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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:
guideline study without detailed documentation
Qualifier:
equivalent or similar to
Guideline:
other: wire-mesh sieve method
Principles of method if other than guideline:
A 140 wire mesh screen was used to determine the approximate % of the test substance passing through following agitation for 5 minutes.
GLP compliance:
no
Type of method:
sieving
Type of particle tested:
primary particle
Type of distribution:
mass based distribution
Specific details on test material used for the study:
Substance ID: STB
Type of Material: Reported as "representative" sample of the material
Mass median aerodynamic diameter:
< 105 µm
Key result
Percentile:
D50
Mean:
< 105 µm
Remarks on result:
not determinable because of methodological limitations
Remarks:
No St. dev. was determined
Conclusions:
The mass median aerodynamic diameter was determined to be <105 microns.
Executive summary:

In a non-GLP, non-guideline study, the test material was placed on a 140 wire mesh sieve and agitated for 5 minutes to determine the approximate weight % of the substance passing through the sieve. Based on this test, it was determined that the mass median aerodynamic diameter of the substance was < 105 microns.

Description of key information

The mass median aerodynamic diameter is <105 microns.

Additional information