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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
other: see 'Remark'
Remarks:
According to appendix R7-1 of ECHA Guidance on Information Requirements and Chemical Safety Assessment multiple techniques should be applied to investigate phys. chem. properties of particulates, although different measurement methods may not provide comparable results. Laser diffraction is the well experienced standard procedure for pigments to determine particle size distribution of the pigment as it is manufactured and delivered.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

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 method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
Bisbenzimidazobenzo[lmn][3,8]phenanthrolinedione
EC Number:
232-340-2
EC Name:
Bisbenzimidazobenzo[lmn][3,8]phenanthrolinedione
Cas Number:
8005-56-9
Molecular formula:
C26H12N4O2
IUPAC Name:
bisbenzimidazobenzo[lmn][3,8]phenanthrolinedione

Results and discussion

Particle sizeopen allclose all
Percentile:
D10
Mean:
0.951 µm
St. dev.:
0.05
Percentile:
D50
Mean:
10.782 µm
St. dev.:
1.4
Percentile:
D90
Mean:
438.727 µm
St. dev.:
124.1

Any other information on results incl. tables

For further percentiles see attached report.

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

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