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Physical & Chemical properties

Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2011-10-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Meets generally accepted scientific standards and is described in sufficient detail
Qualifier:
according to
Guideline:
other: ISO 13320:2009
Deviations:
no
Principles of method if other than guideline:
The particle size distribution was determined by laser diffraction according to ISO 13320:2009 with the MasterSizer S. The technique of laser diffraction is based on the principle that particles passing through a laser beam will scatter light at an angle that is directly related to their size: large particles scatter at low angles, whereas small particles scatter at high angles. The laser diffraction is accurately described by the Fraunhofer Approximation, with the assumption of spherical particle morphology.
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Percentile:
D50
Mean:
14.57 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
No.:
#1
Size:
4.17 µm
Distribution:
5 %
No.:
#2
Size:
5.84 µm
Distribution:
10 %
No.:
#3
Size:
7.16 µm
Distribution:
15 %
No.:
#4
Size:
8.32 µm
Distribution:
20 %
No.:
#5
Size:
9.4 µm
Distribution:
25 %
No.:
#6
Size:
10.43 µm
Distribution:
30 %
No.:
#7
Size:
11.45 µm
Distribution:
35 %
No.:
#8
Size:
14.57 µm
Distribution:
50 %
No.:
#9
Size:
27.17 µm
Distribution:
90 %
No.:
#10
Size:
48.27 µm
Distribution:
100 %
Conclusions:
The median value of particle size of tungsten dioxide is 14.57 µm.
Executive summary:

The granulometric properties of Tungsten Dioxide were analysed by laser diffraction method according to ISO 13320 -2009. The particle size distribution was determined using the particle size analysator MastersizerS from Malvern Instruments. The median value of particle size of Tungsten Dioxide was determined to be 14.57 µm.

Description of key information

The granulometric properties of Tungsten dioxide were analysed by laser diffraction method using the particle size analyzer MastersizerS from Malvern. The median value of particle size of Tungsten dioxide was determined to be 14.57 µm.

Additional information