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Diss Factsheets

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:
04 November 2011 - 27 September 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions - Method A: Particle Size Distribution (effective hydrodynamic radius)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
microscopic examination
Type of particle tested:
primary particle
Type of distribution:
counted distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
Disodium hexatitanate
EC Number:
815-182-4
Cas Number:
12058-75-2
Molecular formula:
Na2Ti6O13
IUPAC Name:
Disodium hexatitanate
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
Appearance: White powder
Storage conditions: Room temperature
Lot number: 1C96
Purity: 100%
Expiry date: 24 March 2014
Date received: 26 August 2011

Results and discussion

Particle size
Percentile:
other: D16
Mean:
< 10 µm
Remarks on result:
other: Standard deviation is not specified
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
> 105 - < 130 µm
Distribution:
0 %
No.:
#1
Size:
> 60 - < 105 µm
Distribution:
17 %
No.:
#1
Size:
> 30 - < 60 µm
Distribution:
38.5 %
No.:
#1
Size:
> 10.4 - < 30 µm
Distribution:
32.6 %
No.:
#1
Size:
> 0.5 - < 10.4 µm
Distribution:
11.9 %
No.:
#2
Size:
> 105 - < 130 µm
Distribution:
0 %
No.:
#2
Size:
> 60 - < 105 µm
Distribution:
9.3 %
No.:
#2
Size:
> 30 - < 60 µm
Distribution:
37.8 %
No.:
#2
Size:
> 10.4 - < 30 µm
Distribution:
39.9 %
No.:
#2
Size:
> 0.5 - < 10.4 µm
Distribution:
13 %
No.:
#3
Size:
> 105 - < 130 µm
Distribution:
0 %
No.:
#3
Size:
> 60 - < 105 µm
Distribution:
12.4 %
No.:
#3
Size:
> 30 - < 60 µm
Distribution:
39.7 %
No.:
#3
Size:
> 10.4 - < 30 µm
Distribution:
33.4 %
No.:
#3
Size:
> 0.5 - < 10.4 µm
Distribution:
14.6 %
No.:
#4
Size:
> 105 - < 130 µm
Distribution:
0 %
No.:
#4
Size:
> 60 - < 105 µm
Distribution:
16.3 %
No.:
#4
Size:
> 30 - < 60 µm
Distribution:
37.8 %
No.:
#4
Size:
> 10.4 - < 30 µm
Distribution:
31.9 %
No.:
#4
Size:
> 0.5 - < 10.4 µm
Distribution:
14 %
No.:
#5
Size:
> 105 - < 130 µm
Distribution:
0 %
No.:
#5
Size:
> 60 - < 105 µm
Distribution:
7.5 %
No.:
#5
Size:
> 30 - < 60 µm
Distribution:
37 %
No.:
#5
Size:
> 10.4 - < 30 µm
Distribution:
36.3 %
No.:
#5
Size:
> 0.5 - < 10.4 µm
Distribution:
19.3 %
No.:
#6
Size:
> 105 - < 130 µm
Distribution:
0 %
No.:
#6
Size:
> 60 - < 105 µm
Distribution:
11.1 %
No.:
#6
Size:
> 30 - < 60 µm
Distribution:
29.8 %
No.:
#6
Size:
> 10.4 - < 30 µm
Distribution:
38.1 %
No.:
#6
Size:
> 0.5 - < 10.4 µm
Distribution:
21 %

Applicant's summary and conclusion

Conclusions:
The results indicated that 16% w/w of test substance was smaller than 10 μm.