Registration Dossier

Administrative data

Endpoint:
nanomaterial porosity
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
nanomaterial specific surface area
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
ISO 9277 Determination of the specific surface area of solids by gas adsorption - BET method
GLP compliance:
no
Type of method:
BET
Specific details on test material used for the study:
form: High surface area alumina (nanofrom)
Instruments:
QUANTACHROME NOVA 3000e
Specific Surface Area:
208 m²/g

Slope = 16.583

Intercept = 2.000e-01

Correlation coefficient, r = 0.999990

C constant = 83.918

Surface Area = 207.505 m²/g

Reason / purpose for cross-reference:
reference to same study
Reference
Endpoint:
density, other
Remarks:
true density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
other: DIN 66137-2 True density by He-Pycnometry
GLP compliance:
no
Type of method:
pycnometer method
Remarks:
He pycnometry
Specific details on test material used for the study:
Samples have been dried for 3.5 h at 105 °C and cooled down in an exsiccator before measurement.
Type:
other: true density
Density:
3.092 g/cm³
Temp.:
24.02 °C
Remarks on result:
other: Density Std. Dev.: 0.0009 g/cm³

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
other: DIN 66133
Version / remarks:
Mercury Porosimetry
Qualifier:
according to guideline
Guideline:
other: DIN 66137-2
Version / remarks:
True Density by He-Pycnometry
GLP compliance:
no
Type of method:
other: Mercury Porosimetry, He-Pycnometry

Test material

Constituent 1
Chemical structure
Reference substance name:
Aluminium oxide
EC Number:
215-691-6
EC Name:
Aluminium oxide
Cas Number:
1344-28-1
Molecular formula:
Al2O3
IUPAC Name:
aluminium oxide
Test material form:
solid: nanoform

Data gathering

Instruments:
POREMASTER 60G

Results and discussion

Porosity (fraction of void space in the material)
Mean:
60 %
Specific pore volume
Mean:
0.493 cm³/g
Modal pore diameter
Mean:
8 nm

Any other information on results incl. tables

Additionally the true density was determined with a QUANTACHROME Ultrapycnometer 1200e (Helium) was determined to be 3.092 g/cm³

Applicant's summary and conclusion