Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Direct observations: clinical cases, poisoning incidents and other

Currently viewing:

Administrative data

Endpoint:
direct observations: clinical cases, poisoning incidents and other
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: not relevant - coated iron oxides were used in the studies

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Unnamed
Year:
1989
Reference Type:
publication
Title:
Unnamed
Year:
1991
Reference Type:
publication
Title:
Unnamed
Year:
1988
Reference Type:
publication
Title:
Unnamed
Year:
1995
Reference Type:
publication
Title:
Unnamed
Year:
1987

Materials and methods

Study type:
clinical case study
Principles of method if other than guideline:
Superparamagnetic particles were used as contrast medium in MRI (Magnetic Resonance Imaging)

Test material

Constituent 1
Chemical structure
Reference substance name:
Triiron tetraoxide
EC Number:
215-277-5
EC Name:
Triiron tetraoxide
Cas Number:
1317-61-9
Molecular formula:
Fe3O4
IUPAC Name:
Triiron tetraoxide
Details on test material:
Lönnemark et al. used polymeric particles coated with magnetite (Fe3O4) and gamma Fe2O3
Magin et al. used dextran coated iron oxide (magnetite)

Method

Subjects:
Humans and laboratory animals (rats)
Reason of exposure:
other: as contrast medium in MRI

Results and discussion

Applicant's summary and conclusion

Executive summary:

Magnetic iron oxides demonstrated a significantly increase in dectability of some

abdominal tumors by MR