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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:
January 15, 2004
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Valid method

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2004
Report date:
2004

Materials and methods

Principles of method if other than guideline:
Laser diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
2-[[2-chloro-4-[3-chloro-4-[[1-(2,4-dimethylphenylamino)-1,3-dioxobutan- 2-yl]diazenyl]phenyl]phenyl]diazenyl]-N-(2-methylphenyl)-3-oxobutanamide
EC Number:
911-715-0
Molecular formula:
C36H34Cl2N6O4 // C35H32Cl2N6O4 // C34H30Cl2N6O4
IUPAC Name:
2-[[2-chloro-4-[3-chloro-4-[[1-(2,4-dimethylphenylamino)-1,3-dioxobutan- 2-yl]diazenyl]phenyl]phenyl]diazenyl]-N-(2-methylphenyl)-3-oxobutanamide
Constituent 2
Reference substance name:
Pigment Yellow 174
IUPAC Name:
Pigment Yellow 174

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
6.5 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D50
Mean:
6.5 µm
St. dev.:
0.85

Any other information on results incl. tables

Standard deviation calculated from experience with pigments: 0.13 x D50 (minimum value: 0.1)

Applicant's summary and conclusion

Conclusions:
The mass median diameter is 6.5 µm.
Executive summary:
The mass median diameter using laser diffraction (volumetric distribution) was determined to be 6.5 µm.