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Diss Factsheets

Administrative data

Endpoint:
nanomaterial aspect ratio/shape
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
Size measurements were carried out using DSL (dynamic light scattering).
Measurements were made using Malvern Zetasizer Nano ZS on a dispersion of Laponite XLG lot 12-228 at 0.5% concentration in UHQ water aged for 12 hours.
GLP compliance:
not specified
Type of method:
other: DSL

Test material

Constituent 1
Chemical structure
Reference substance name:
Silicic acid, lithium magnesium sodium salt
EC Number:
258-476-2
EC Name:
Silicic acid, lithium magnesium sodium salt
Cas Number:
53320-86-8
Molecular formula:
Na(1.00+/-0.99)[(Si8Mg(5.0+/-1.0)Li(1.00+/-0.99) O20 (OH)4](1.00+/-0.99)
IUPAC Name:
magnesium(2+) lithium(1+) sodium bis(oxosilanebis(olate))
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
Laponite XLG powder. Batch number 12-228

Results and discussion

Shape description
Shape:
other: disc
Percentage:
100 %
Aspect ratio
x Dimension:
> 4 - < 73
y Dimension:
> 4 - < 73
z Dimension:
> 0.9 - < 1

Applicant's summary and conclusion