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700320

Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution

5 nm avg. part. size, 5 mg/mL in toluene

Synonym(s):

Magnetic iron oxide nanocrystals, Magnetite, Superparamagnetic iron oxide nanoparticles

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About This Item

Empirical Formula (Hill Notation):
Fe3O4
CAS Number:
1317-61-9
Molecular Weight:
231.53
MDL number:
MFCD00011010
UNSPSC Code:
12352302
PubChem Substance ID:
329762196
NACRES:
NA.23

form

nanoparticles
solution

concentration

5 mg/mL in toluene

magnetization

≥30 emu/g (at ambient temperature under 4500 Oe)

avg. part. size

5 nm

particle size

5 nm±1 nm (TEM; conforms)

density

0.865 g/mL at 25 °C

SMILES string

O=[Fe].O=[Fe]O[Fe]=O

InChI

1S/3Fe.4O

InChI key

SZVJSHCCFOBDDC-UHFFFAOYSA-N

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General description

Concentration 5mg/ml includes total weight nanocrystals plus ligands.

Signal Word

Danger

Hazard Classifications

Aquatic Chronic 3 - Asp. Tox. 1 - Flam. Liq. 2 - Repr. 2 - Skin Irrit. 2 - STOT RE 2 - STOT SE 3

Target Organs

Central nervous system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

39.9 °F

Flash Point(C)

4.4 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Jens Baumgartner et al.
Nature materials, 12(4), 310-314 (2013-02-05)
The formation of crystalline materials from solution is usually described by the nucleation and growth theory, where atoms or molecules are assumed to assemble directly from solution. For numerous systems, the formation of the thermodynamically stable crystalline phase is additionally
Marina I Siponen et al.
Nature, 502(7473), 681-684 (2013-10-08)
Magnetotactic bacteria align along the Earth's magnetic field using an organelle called the magnetosome, a biomineralized magnetite (Fe(II)Fe(III)2O4) or greigite (Fe(II)Fe(III)2S4) crystal embedded in a lipid vesicle. Although the need for both iron(II) and iron(III) is clear, little is known
Tsung-Ju Li et al.
Biomaterials, 34(32), 7873-7883 (2013-07-24)
We present an approach for synchronizing hyperthermia and thermal-responsive local drug release. The targeting probe has a magnetite nanocrystal (Fe₃O₄@PSMA) core and a polynucleotide shell that carries 5-fluorouracil (5-FU) and anti-human epidermal growth factor receptor 2 (anti-HER2) antibody for cancer
Maoquan Chu et al.
Biomaterials, 34(16), 4078-4088 (2013-03-08)
The photothermal effect of Fe3O4 magnetic nanoparticles is investigated for cancer therapy both in vitro and in vivo experiments. Heat is found to be rapidly generated by red and near-infrared (NIR) range laser irradiation of Fe3O4 nanoparticles with spherical, hexagonal and wire-like
A Aranda et al.
Toxicology in vitro : an international journal published in association with BIBRA, 27(2), 954-963 (2013-01-30)
No consensus exists on how to address possible toxicity of nanomaterials as they interfere with most in vitro screening tests based on colorimetric and fluorimetric probes such as the dichloro-dihydro-fluorescein diacetate (DCFH-DA) assay for detection of oxidative species. In the
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