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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:
2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well performed study according to accepted standard

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: ISO 13320 - 1
GLP compliance:
no
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
Hydrogen [1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)][1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphtholato(2-)]chromate(1-) , compound with 3-[(2-ethylhexyl)oxy]propylamine (1:1)
EC Number:
276-857-1
EC Name:
Hydrogen [1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)][1-[(2-hydroxy-5-nitrophenyl)azo]-2-naphtholato(2-)]chromate(1-) , compound with 3-[(2-ethylhexyl)oxy]propylamine (1:1)
Cas Number:
72812-34-1
Molecular formula:
C32H18CrN6O8.C11H25NO.H
IUPAC Name:
Chromate(1-), [1-[2-[2-(hydroxy-kO)-4-nitrophenyl]diazenyl-kN1]-2-naphthalenolato(2-)-kO][1-[2-[2-(hydroxy-kO)-5-nitrophenyl]diazenyl-kN1]-2-naphthalenolato(2-)-kO]-, hydrogen, compd. with 3-[(2-ethylhexyl)oxy]-1-propanamine (1:1:1)

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
27.1 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
1.9 µm
St. dev.:
0.1
Percentile:
D50
Mean:
27.1 µm
St. dev.:
3.5
Percentile:
D90
Mean:
407.7 µm
St. dev.:
110.4

Applicant's summary and conclusion

Conclusions:
The mass median diameter of the volumetric particle size distribution is 27.1 µm.
Executive summary:

The volumetric particle size distribution of the substance was determined according ISO 13320 - 1 with a Malvern Mastersizer 2000 equipment using the vibrating tray unit Scirocco 2000. The mass median diameter D50 was found to be 27.1 µm.