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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:
2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Principles of method if other than guideline:
Laser diffraction (Malvern mastersizer instrument)
GLP compliance:
not specified
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
Tungsten disilicide
EC Number:
234-909-0
EC Name:
Tungsten disilicide
Cas Number:
12039-88-2
Molecular formula:
Si2W
IUPAC Name:
tungsten disilicide
Test material form:
solid: particulate/powder

Results and discussion

Particle sizeopen allclose all
Percentile:
D10
Mean:
1.048 µm
Remarks on result:
other: standard deviation not indicated
Percentile:
D50
Mean:
2.369 µm
Remarks on result:
other: standard deviation not indicated
Percentile:
D90
Mean:
4.953 µm
Remarks on result:
other: standard deviation not indicated

Applicant's summary and conclusion

Conclusions:
The particle size distribution of WSi2 was determined by laser diffraction in water as dispersion liquid.
Mean diameters (distribution type: volume) are the following:
D (v, 0.1) = 1.048 μm
D (v, 0.5) = 2.369 μm
D (v, 0.9) = 4.953 μm