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Sigma-Aldrich

Iron oxide(II,III), magnetic nanoparticles solution

20 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

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

avg. part. size

20 nm

particle size

20 nm (+/- 2nm TEM)

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
700320725366725358
particle size

20 nm (+/- 2nm TEM)

particle size

5 nm±1 nm (TEM; conforms)

particle size

18-22 nm

particle size

9-11 nm (TEM)

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

1.00 g/mL at 25 °C

concentration

5 mg/mL in toluene

concentration

5 mg/mL in toluene

concentration

5 mg/mL in H2O

concentration

5 mg/mL in H2O

magnetization

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

magnetization

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

magnetization

>20 emu/g, at 4500Oe

magnetization

>45 emu/g, at 4500Oe

avg. part. size

20 nm

avg. part. size

5 nm

avg. part. size

20 nm

avg. part. size

10 nm

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, Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

45.0 °F

flash_point_c

7.2 °C

ppe

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


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Oliver Raschdorf et al.
Molecular microbiology, 89(5), 872-886 (2013-07-31)
Magnetospirillum gryphiswaldense uses intracellular chains of membrane-enveloped magnetite crystals, the magnetosomes, to navigate within magnetic fields. The biomineralization of magnetite nanocrystals requires several magnetosome-associated proteins, whose precise functions so far have remained mostly unknown. Here, we analysed the functions of
M A Olutoye et al.
Bioresource technology, 132, 103-108 (2013-02-12)
An active heterogeneous Al2O3 modified MgZnO (MgZnAlO) catalyst was prepared and the catalytic activity was investigated for the transesterification of different vegetable oils (refined palm oil, waste cooking palm oil, palm kernel oil and coconut oil) with methanol to produce
Aman Khurana et al.
Radiology, 269(1), 186-197 (2013-07-16)
To determine whether intravenous ferumoxytol can be used to effectively label mesenchymal stem cells (MSCs) in vivo and can be used for tracking of stem cell transplants. This study was approved by the institutional animal care and use committee. Sprague-Dawley
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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