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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
Study period:
2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
GLP compliance:
no
Type of method:
Laser scattering/diffraction

Test material

Constituent 1
Chemical structure
Reference substance name:
6,8-dianilinonaphthalene-1-sulphonic acid
EC Number:
204-970-8
EC Name:
6,8-dianilinonaphthalene-1-sulphonic acid
Cas Number:
129-93-1
Molecular formula:
C22H18N2O3S
IUPAC Name:
6,8-dianilinonaphthalene-1-sulfonic acid
Test material form:
solid: particulate/powder

Results and discussion

Mass median aerodynamic diameter:
7.9 µm
Geometric standard deviation:
1
Particle sizeopen allclose all
Percentile:
D10
Mean:
1.2 µm
St. dev.:
0.1
Percentile:
D50
Mean:
7.9 µm
St. dev.:
1
Percentile:
D90
Mean:
36.2 µm
St. dev.:
8.2

Applicant's summary and conclusion

Conclusions:
The mass median diameter of the volumetric particle size distribution of the substance is 7.9 µm.
Executive summary:

The volumetric particle size distribution of the substance was determined according to ISO 13320 - 1 using the Malvern Mastersizer equipment.

The mass median diameter D50 was found to be 7.9 µm.