Iron oxide(II,III), magnetic nanoparticles solution

Name: Iron oxide(II,III), magnetic nanoparticles solution
Brand: ALDRICH
Price: 513 USD
Availability: InStock

5 nm avg. part. size (TEM), PEG functionalized, 1 mg/mL Fe in H₂O, dispersion

Synonym(s):

Fe NP PEG, FexOy, Magnetic iron oxide nanocrystals, Magnetite, Superparamagnetic iron oxide nanoparticles

Slide 1 of 2

Select a Size

10 ML

$513.00

Estimated to ship onFebruary 26, 2026Details

Request a Bulk Order

About This Item

Empirical Formula (Hill Notation):

Fe₃O₄

CAS Number:

1317-61-9

Molecular Weight:

231.53

NACRES:

NA.23

PubChem Substance ID:

329768219

UNSPSC Code:

12352302

MDL number:

MFCD00011010

Key Documents

View All Documentation

Product Name

Iron oxide(II,III), magnetic nanoparticles solution, 5 nm avg. part. size (TEM), PEG functionalized, 1 mg/mL Fe in H₂O, dispersion

InChI

1S/3Fe.4O

SMILES string

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

InChI key

SZVJSHCCFOBDDC-UHFFFAOYSA-N

form

dispersion
nanoparticles

concentration

1 mg/mL Fe in H₂O

magnetization

>25 emu/g (at room temperature; under 4500 Oe)

color

brown

avg. part. size

5 nm (TEM)

density

0.995 g/mL at 25 °C
~1 g/mL at 25 °C

functional group

PEG

storage temp.

2-8°C

Quality Level

100

Looking for similar products? Visit Product Comparison Guide

Related Categories

Electronic Materials

Inorganic & Metallic Nanomaterials

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item	747319	747343	747327
Sigma-Aldrich 790508 Iron oxide(II,III), magnetic nanoparticles solution	Sigma-Aldrich 747319 Iron oxide(II,III), magnetic nanoparticles solution	Sigma-Aldrich 747343 Iron oxide(II,III), magnetic nanoparticles solution	Sigma-Aldrich 747327 Iron oxide(II,III), magnetic nanoparticles solution
form dispersion, nanoparticles	form dispersion, nanoparticles	form dispersion, nanoparticles	form dispersion, nanoparticles
density 0.995 g/mL at 25 °C, ~1 g/mL at 25 °C	density 0.996 g/mL at 25 °C, ~1 g/mL at 25 °C	density 0.997 g/mL at 25 °C, ~1 g/mL at 25 °C	density ~1 g/mL at 25 °C
concentration 1 mg/mL Fe in H₂O	concentration 1 mg/mL Fe in H₂O	concentration 1 mg/mL Fe in H₂O	concentration 1 mg/mL Fe in H₂O
magnetization >25 emu/g (at room temperature; under 4500 Oe)	magnetization >45 emu/g, at room temperature; under 4500 Oe	magnetization >25 emu/g, at room temperature; under 4500 Oe	magnetization >45 emu/g, at room temperature; under 4500 Oe
color brown	color brown	color brown	color black
avg. part. size 5 nm (TEM)	avg. part. size 10 nm (TEM)	avg. part. size 5 nm (TEM)	avg. part. size 30 nm (TEM)

Application

These magnetic nanoparticles are typically used in imaging or as contrast agents. The surface functionality allows for different ligation or further functionalization.

Do not freeze.

General description

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

Legal Information

Product of Ocean Nanotech; LLC.

Storage Class

12 - Non Combustible Liquids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Comparison of ultrasmall IONPs and Fe salts biocompatibility and activity in multi-cellular in vitro models.

Natalia Janik-Olchawa et al.

Scientific reports, 10(1), 15447-15447 (2020-09-24)

In the paper, the results of the first regular studies of ultra-small iron oxide nanoparticles (IONPs) toxicity in vitro were presented. The influence of PEG-coated NPs with 5 nm magnetite core on six different cell lines was examined. These were: human

Magnetic resonance imaging of folic acid-coated magnetite nanoparticles reflects tissue biodistribution of long-acting antiretroviral therapy.

Tianyuzi Li et al.

International journal of nanomedicine, 10, 3779-3790 (2015-06-18)

Regimen adherence, systemic toxicities, and limited drug penetrance to viral reservoirs are obstacles limiting the effectiveness of antiretroviral therapy (ART). Our laboratory's development of the monocyte-macrophage-targeted long-acting nanoformulated ART (nanoART) carriage provides a novel opportunity to simplify drug-dosing regimens. Progress

The long-lasting effect of ferumoxytol on abdominal magnetic resonance imaging.

Aaron Harman et al.

Journal of computer assisted tomography, 38(4), 571-573 (2014-04-16)

Ferumoxytol is a parenteral iron therapy that the Food and Drug Administration recently approved for the treatment of iron-deficiency anemia. The form of the iron, ultrasmall superparamagnetic iron oxide nanoparticles, causes T1, T2, and T2* shortening on magnetic resonance imaging

Genetic dissection of the mamAB and mms6 operons reveals a gene set essential for magnetosome biogenesis in Magnetospirillum gryphiswaldense.

Anna Lohße et al.

Journal of bacteriology, 196(14), 2658-2669 (2014-05-13)

Biosynthesis of bacterial magnetosomes, which are intracellular membrane-enclosed, nanosized magnetic crystals, is controlled by a set of >30 specific genes. In Magnetospirillum gryphiswaldense, these are clustered mostly within a large conserved genomic magnetosome island (MAI) comprising the mms6, mamGFDC, mamAB

Experimental diagenesis of organo-mineral structures formed by microaerophilic Fe(II)-oxidizing bacteria.

Aude Picard et al.

Nature communications, 6, 6277-6277 (2015-02-19)

Twisted stalks are organo-mineral structures produced by some microaerophilic Fe(II)-oxidizing bacteria at O2 concentrations as low as 3 μM. The presence of these structures in rocks having experienced a diagenetic history could indicate microbial Fe(II)-oxidizing activity as well as localized

View All Related Papers

Articles

Fe3O4 Nanostructure Synthesis and Application

Prof. Yadong Yin discusses various synthesis methods of magnetite nanocrystals and their applications in different fields.

Iron Oxide Nanoparticles: Characteristics & Apps

Iron oxide nanoparticles find diverse applications in magnetic data storage, biosensing, and drug delivery due to their properties.

Magnetic Nanoparticles for Cancer Theranostics

The recent emergence of a number of highly functional nanomaterials has enabled new approaches to the understanding, diagnosis, and treatment of cancer.

Micro- and Nanofabricated Biomaterials

Biomaterials science integrates smart materials into biological research, requiring a deep understanding of biological systems.

See All

Questions

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service