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700320

Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution

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

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Synonym(s):
Magnetic iron oxide nanocrystals, Magnetite, Superparamagnetic iron oxide nanoparticles
Empirical Formula (Hill Notation):
Fe3O4
CAS Number:
Molecular Weight:
231.53
MDL number:
PubChem Substance ID:
NACRES:
NA.23

form

nanoparticles
solution

Quality Level

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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1 of 4

This Item
700304725366747408
particle size

5 nm±1 nm (TEM; conforms)

particle size

20 nm (+/- 2nm TEM)

particle size

18-22 nm

particle size

-

density

0.865 g/mL at 25 °C

density

0.865 g/mL at 25 °C

density

1.00 g/mL at 25 °C

density

0.988 g/mL at 25 °C, ~1 g/mL at 25 °C

concentration

5 mg/mL in toluene

concentration

5 mg/mL in toluene

concentration

5 mg/mL in H2O

concentration

1 mg/mL Fe in H2O

magnetization

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

magnetization

>20 emu/g, at room temp. under 4500 Oe

magnetization

>20 emu/g, at 4500Oe

magnetization

>45 emu/g (at room temperature; under 4500 Oe)

avg. part. size

5 nm

avg. part. size

20 nm

avg. part. size

20 nm

avg. part. size

30 nm (TEM)

General description

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

signalword

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

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

39.9 °F

flash_point_c

4.4 °C

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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Yongxing Hu et al.
Journal of the American Chemical Society, 135(6), 2213-2221 (2013-01-26)
Controlled assembly of nanoparticles into asymmetric configurations is of great interest due to their novel properties and promising applications. In this Article, we report a generic strategy for the synthesis of dimer nanoclusters and asymmetric nanoassemblies by using magnetic colloidal
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
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

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