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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: no information on type of method
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Remarks:
The determination of the grain size was determined by laser scattering/diffraction in wet dispersion (in water) thanks to a Mastersizer 2000 from Malvern.

Test material

Constituent 1
Reference substance name:
Reaction products of diazotized mixture of aniline, toluidines and xylidines coupled with mixture of aniline, toluidines and xylidines, subsequently diazotized then coupled with 2-naphthol
EC Number:
947-944-8
Cas Number:
70879-65-1
Molecular formula:
C23H17N4O
IUPAC Name:
Reaction products of diazotized mixture of aniline, toluidines and xylidines coupled with mixture of aniline, toluidines and xylidines, subsequently diazotized then coupled with 2-naphthol

Results and discussion

Particle sizeopen allclose all
Key result
Percentile:
D10
Mean:
ca. 3.652 µm
Remarks on result:
other: standard deviation was not determined
Key result
Percentile:
D50
Mean:
ca. 13.472 µm
Remarks on result:
other: standard deviation was not determined
Key result
Percentile:
D90
Mean:
ca. 34.605 µm
Remarks on result:
other: standard deviation was not determined

Applicant's summary and conclusion

Conclusions:
The substance has the following particle size distribution:
D10 = 3.652 µm
D50 = 13.472 µm
D90 = 34.605 µm