The particle size is determined by TEM.If the solution as provided is not diluted, a superlattice of multilayer nanocrystals will form on the grid, appearing to be an aggregate. The solution can be diluted with the same solvent that it was shipped in (toluene). A solution diluted to 0.1-0.5 mg/mL should be concentrated enough to get a nice picture. One drop per grid should be sufficient. (Since the solution is provided at a concentration of 5 mg/mL, this would be a 10- to 50-fold dilution.)After applying the sample to the grid, a drying time of a minimum of 10-15 minutes is recommended.After performing several successful dilutions and getting good results, the analyst will get a feel for the correct dilution just by judging the color and darkness of the diluted sample. If you see lone isolated dots in the TEM, then your sample is too dilute. If you cannot distinguish separate particles, it is too concentrated. Good record keeping will help to zero in on the best dilution factor for the type of picture that you want.
700320
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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| Size/SKU | Availability | Price |
|---|---|---|
5 mL | Check Cart for Availability | $284.00 $297.00 |
About This Item
Quality Segment
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
General description
1 of 1
This Item | |||
|---|---|---|---|
| description 5 nm avg. part. size, 5 mg/mL in toluene | description 10 nm avg. part. size (TEM), PEG functionalized, 1 mg/mL Fe in H2O, dispersion | description 20 nm avg. part. size, 5 mg/mL in toluene | description 30 nm avg. part. size (TEM), PEG functionalized, dispersion, 1 mg/mL Fe in H2O |
| form nanoparticles, solution | form dispersion, nanoparticles | form nanoparticles, solution | form dispersion, nanoparticles |
| particle size 5 nm±1 nm (TEM; conforms) | particle size - | particle size 20 nm (+/- 2nm TEM) | particle size - |
| density 0.865 g/mL at 25 °C | density 0.996 g/mL at 25 °C, ~1 g/mL at 25 °C | density 0.865 g/mL at 25 °C | density ~1 g/mL at 25 °C, 0.988 g/mL at 25 °C |
| avg. part. size 5 nm | avg. part. size 10 nm (TEM) | avg. part. size 20 nm | avg. part. size 30 nm (TEM) |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| magnetization ≥30 emu/g (at ambient temperature under 4500 Oe) | magnetization >45 emu/g, at room temperature; under 4500 Oe | magnetization >20 emu/g, at room temp. under 4500 Oe | magnetization >45 emu/g (at room temperature; under 4500 Oe) |
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Signal Word
Danger
Hazard Codes
Precautionary Statements
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
WGK 3
Flash Point (°F)
39.9 °F
Flash Point (°C)
4.4 °C
PPE (personal protective equipment)
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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How should a sample of the Iron oxide(II,III), magnetic nanoparticles solution in toluene be prepared for analysis by transmission electron microscopy (TEM)?
1 answer-
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How is the magnetization of Product 700320, Iron oxide, magnetic, determined?
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Per the supplier, the magnetization is determined by using a Magnetic Susceptibility Balance.
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What is the Department of Transportation shipping information for this product?
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Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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What is the coating thickness of oleic acid on product number 700312, 700320, and 700304, Iron oxide(II,III), magnetic nanoparticles solution?
1 answer-
The suppliers of the magnetic iron oxide nanoparticles in toluene have indicated that the particles are essentially coated with a monolayer of oleic acid. Since the oleic acid is a long chain hydrocarbon there can exist some folding and irregular structure on the surface. The suppliers estimate that one should add 1-2 nm to the particle size due to the presence of the oleic acid coating. From this, 1.5 nm is the closest approximation of coating thickness as provided by our suppliers.
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What is the purpose of the oleic acid in Product 700320, Iron oxide, magnetic?
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Per the manufacturer, the oleic acid allows the iron oxide nanoparticles to be soluble in the solvent (i.e. toluene).
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What method is used to determine the size of the particles in Product 700320, Iron oxide, magnetic?
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TEM used to check particle size. Light Scattering or similar methods are not utilized.
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