If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
310069
Iron(II,III) oxide
powder, <5 μm, 95%
Synonym(s):
Ferrosoferric oxide, Iron oxide black, Magnetite
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 25 g | Available to ship TODAYfromMILWAUKEE | $54.30 | |
| 500 g | Available to ship TODAYfromMILWAUKEE | $397.00 |
About This Item
$54.30
Available to ship TODAYDetails
Quality Level
assay
95%
form
powder
composition
Fe₃O₄
reaction suitability
core: iron
particle size
<5 μm
mp
1538 °C (lit.)
density
4.8-5.1 g/mL at 25 °C (lit.)
application(s)
battery manufacturing
SMILES string
O=[Fe].O=[Fe]O[Fe]=O
InChI
1S/3Fe.4O
InChI key
SZVJSHCCFOBDDC-UHFFFAOYSA-N
General description
Application
- A starting material to synthesize Ca2Fe2O5 (srebrodolskite) microspheres via a single-stage flame spheroidisation (FS) process.
- A catalyst for reverse water gas shift reactions(RWGS).
1 of 1
This Item | |||
|---|---|---|---|
| assay 95% | assay 99.99% trace metals basis | assay - | assay - |
| form powder | form powder | form nanoparticles, solution | form dispersion, nanoparticles |
| particle size <5 μm | particle size - | particle size 9-11 nm (TEM; conforms) | particle size 4-6 nm (TEM) |
| density 4.8-5.1 g/mL at 25 °C (lit.) | density 4.8-5.1 g/mL at 25 °C (lit.) | density 0.865 g/mL at 25 °C | density 1.00 g/mL at 25 °C |
| mp 1538 °C (lit.) | mp 1538 °C (lit.) | mp - | mp - |
| Quality Level 200 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
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Storage Class
11 - Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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Articles
Prof. Randal Lee discusses iron oxide magnetic nanospheres and nanocubes design considerations for biosensing applications.
An article concerning self-propagating reactions induced by mechanical alloying, presented by Sigma-Aldrich.com.
Magnetic materials find diverse applications from data storage to renewable energy.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 310069-25G | 04061826676592 |
| 310069-500G | 04061826676660 |
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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