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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:
From 10 March 2010 to 13 April
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant test performed according standard OECD guideline.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
other: not detailed

Test material

Constituent 1
Reference substance name:
Tin ores, melting residues, hardhead
EC Number:
283-928-0
EC Name:
Tin ores, melting residues, hardhead
Cas Number:
84776-04-5
Molecular formula:
Not applicable
IUPAC Name:
Tin ores, melting residues, hardhead
Details on test material:
- Name of test material (as cited in study report): MC_BR_HARDHEAD 1002D
- Substance type: UVCB substance
- Physical state: solid
- Composition of test material, percentage of components:
- Lot/batch No.: 314516
- Expiration date of the lot/batch: Not provided
- Storage condition of test material: in darkness at room temperature

Results and discussion

Particle size
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
> 1 mm
Distribution:
10.5 %
Remarks on result:
other: The size of a part of these blocks is visibly upper than 4 mm
No.:
#2
Size:
> 100 - <= 1 000 µm
Distribution:
29.7 %
No.:
#3
Size:
> 90 - <= 100 µm
Distribution:
4.4 %
No.:
#4
Size:
> 63 - <= 90 µm
Distribution:
11.2 %
No.:
#5
Size:
> 45 - <= 63 µm
Distribution:
9 %
No.:
#6
Size:
> 32 - <= 45 µm
Distribution:
5.9 %
No.:
#7
Size:
> 25 - <= 32 µm
Distribution:
20.8 %
No.:
#8
Size:
> 20 - <= 25 µm
Distribution:
4.9 %
No.:
#9
Size:
<= 20 µm
Distribution:
2.8 %

Applicant's summary and conclusion

Conclusions:
The granulometry of the substance is very broad. It contains large particles (> 4 mm) as well as much finer particles below < 90µm.