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:
24 October 2007
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Valid method according to company guideline

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
2007
Report Date:
2007
Reference Type:
other company data
Title:
Unnamed
Year:
2006
Report Date:
2006

Materials and methods

Principles of method if other than guideline:
Malvern laser diffraction according to Ciba method X025
Type of distribution:
volumetric distribution

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
1.43 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D50
Mean:
1.43 µm
St. dev.:
0.19

Any other information on results incl. tables

Standard deviation calculated from experience with pigments: 0.13 x D50 (minimum value: 0.1)

Applicant's summary and conclusion

Conclusions:
The mass median diameter of the test item is 1.43 µm.
Executive summary:
The mass median diameter using Malvern laser diffraction (volumetric distribution) was determined to be 1.43 µm.