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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
nanomaterial porosity
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
The Iron Oxides: Structure, Properties, Reactions, Occurrences and Uses: Structure, Properties, Reactions, Occurences and Uses
Author:
Schwertmann U, Cornell RM
Year:
2003
Bibliographic source:
Verlag: Wiley-VCH; Auflage: 2., vollst. überarb. u. erw. Aufl. (29. Juli 2003); Sprache: Englisch; ISBN-10: 3527302743; ISBN-13: 978-3527302741
Reference Type:
other company data
Title:
Unnamed
Year:
2015

Materials and methods

Principles of method if other than guideline:
No details presented

Test material

Constituent 1
Chemical structure
Reference substance name:
Diiron trioxide
EC Number:
215-168-2
EC Name:
Diiron trioxide
Cas Number:
1309-37-1
Molecular formula:
Fe2O3
IUPAC Name:
diiron(3+) trioxidandiide
Test material form:
solid: nanoform
Details on test material:
Not specified

Results and discussion

Porosity (fraction of void space in the material)
Remarks on result:
not measured/tested
Remarks:
Comparison between the results of the particle size measurements and the specific surface area according to BET shows no significant evidence for porosity.

Any other information on results incl. tables

The average width of the micropores as determined by electron microscopy was twice that found by t-plot analysisof the N2 adsorption/desorption isotherms, because the electron beam causes broadening of the pores.

Applicant's summary and conclusion

Conclusions:
Comparison between the results of the particle size measurements and the specific surface area according to BET shows no significant evidence for porosity.