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Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

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:
other: According to ISO 13320-1. Laser diffraction is the well experienced standard procedure for solids to determine particle size distribution.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: ISO 13320-1
Principles of method if other than guideline:
Laser diffraction particle sizing
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
9-ethylcarbazole
EC Number:
201-660-4
EC Name:
9-ethylcarbazole
Cas Number:
86-28-2
Molecular formula:
C14H13N
IUPAC Name:
9-ethyl-9H-carbazole

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
192.62 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
17.45 µm
St. dev.:
0.7
Percentile:
D50
Mean:
192.62 µm
St. dev.:
25
Percentile:
D90
Mean:
602.15 µm
St. dev.:
118

Any other information on results incl. tables

Given standard deviation is based on the general experience with the method. The estimated values are typical standard deviations:

D10: 4 % of D10 (minimum value 0.05 µm)

D50: 13 % of D50 (minimum value 0.1 µm)

D90: 29 % of D90 - D50

Applicant's summary and conclusion

Executive summary:
The mass median diameter of the test item using Malvern laser diffraction (volumetric distribution) is 192.62 µm.