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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:
16.11.2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
GLP compliance:
no
Remarks:
not required, since physical chemical property
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
442-650-1
EC Name:
-
Cas Number:
56450-90-9
Molecular formula:
F4Mg5Na2O20Si8
IUPAC Name:
silanedione hydrofluoride magnesium dihydride sodium hydride
Test material form:
solid: particulate/powder
Details on test material:
One sample of Sodium Magnesium Fluoride Silicate, Lot No. 91107
EINECS# 442-650-1
CAS# 56450-90-9
Sample submission date: 16.11.2009

Results and discussion

Mass median aerodynamic diameter:
ca. 7 µm
Particle sizeopen allclose all
Key result
Percentile:
D10
Mean:
< 2 µm
Remarks on result:
other: St. dev. unknown
Key result
Percentile:
D50
Mean:
< 6 µm
Remarks on result:
other: St. dev. unknown
Key result
Percentile:
D90
Mean:
< 14 µm
Remarks on result:
other: St. dev. unknown
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
< 2 µm
Distribution:
6.34 %
No.:
#2
Size:
> 2 - < 200 µm
Distribution:
93.66 %
No.:
#3
Size:
> 200 µm
Distribution:
0 %

Applicant's summary and conclusion

Conclusions:
very fine powder, 90% have a particle size of less than 14 μm.