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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Study period:
2016
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: well performed study according to acknowledged standard

Data source

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

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: ISO 13320 -1
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-(1,4-phenylene)bis[4-[(4-methoxyphenyl)methylene]oxazol-5(4H)-one]
EC Number:
257-055-0
EC Name:
2,2'-(1,4-phenylene)bis[4-[(4-methoxyphenyl)methylene]oxazol-5(4H)-one]
Cas Number:
51202-86-9
Molecular formula:
C28H20N2O6
IUPAC Name:
2,2'-(1,4-phenylene)bis[4-(4-methoxybenzylidene)-1,3-oxazol-5(4H)-one]
Details on test material:
Purity: 98.4 % (w/w)

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
3.9 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D10
Mean:
0.89 µm
St. dev.:
0.05
Percentile:
D50
Mean:
3.9 µm
St. dev.:
0.5
Percentile:
D90
Mean:
8.4 µm
St. dev.:
1.3

Applicant's summary and conclusion

Conclusions:
The mass median diameter is 3.9 µm.
Executive summary:

The volumetric particle size distribution of the substance was determined with the following equipment: Malvern Mastersizer 2000, unit: Scirocco 2000.

The mass median diameter D50 could be determined as 3.9 µm.