1,4-naphthoquinone

Particle size distribution (Granulometry)

Link to relevant study record(s)

Reference

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

ISO 13320 (Particle size analysis - Laser diffraction methods)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: CIPAC MT 187

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

Laser scattering/diffraction

Type of distribution:

mass based distribution

Mass median aerodynamic diameter:

18.321 µm

Geometric standard deviation:

0.015

Percentile:

D10

Mean:

5.963 µm

St. dev.:

0.132

Percentile:

D50

Mean:

15.364 µm

St. dev.:

0.282

Percentile:

D90

Mean:

44.177 µm

St. dev.:

1.349

Under magnification, the sample was observed to be made up of single crystalline particles. The smallest individual particle size was approximately 3 μm and the largest individual size was approximately 58 μm.

Conclusions:

The particle size mass media aerodynamic diameter (MMAD) was determined to be 18.321 µM and the volume of sample with particles < 10 µm was 28.4%.

Description of key information

The particle size mass media aerodynamic diameter (MMAD) was determined to be 18.321 µM and the volume of sample with particles < 10 µm was 28.4%. These values were determined using a laser diffraction particle size analyser and in accordance with ISO 13320:2009.