Registration Dossier

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:
2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: In-house study performed according to OECD guidelines.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report Date:
2007

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
GLP compliance:
no
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
Titanium diboride Batch No. 703M1, sponsored by ESK Ceramics GmbH & Co. KG
Purity see section 1.4

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
1.8 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
other: D6
Mean:
0.1 µm
St. dev.:
0.002
Percentile:
D50
Mean:
1.8 µm
St. dev.:
0.036
Percentile:
other: D97
Mean:
5 µm
St. dev.:
0.1

Applicant's summary and conclusion

Conclusions:
The medium particle size of a typical technical grade titanium diboride powder is appr. 1.8 µm, the D97 is appr. 5 µm.