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
637025
Cobalt(II,III) oxide
nanopowder, <50 nm particle size (SEM), 99.5% trace metals basis
Synonym(s):
Cobalt tetraoxide, Cobaltic-cobaltous oxide, Tricobalt tetraoxide
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$94.90
$284.00
$574.00
$94.90
About This Item
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Product Name
Cobalt(II,III) oxide, nanopowder, <50 nm particle size (SEM), 99.5% trace metals basis
SMILES string
O=[Co].O=[Co]O[Co]=O
InChI
1S/3Co.4O
InChI key
LBFUKZWYPLNNJC-UHFFFAOYSA-N
assay
99.5% trace metals basis
form
nanopowder
surface area
40-70 m2/g , typical range
particle size
<50 nm (SEM)
mp
895 °C (dec.) (lit.)
density
6.11 g/mL at 25 °C (lit.)
bulk density
0.57 g/mL
application(s)
battery manufacturing
Quality Level
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Related Categories
1 of 4
This Item | 221643 | 933783 | 773352 |
|---|---|---|---|
| form nanopowder | form powder | form nanopowder | form nanopowder |
| particle size <50 nm (SEM) | particle size <10 μm | particle size - | particle size 30 nm (TEM) |
| assay 99.5% trace metals basis | assay - | assay ≥99.5% trace metals basis | assay 99% trace metals basis |
| density 6.11 g/mL at 25 °C (lit.) | density 6.11 g/mL at 25 °C (lit.) | density - | density - |
| mp 895 °C (dec.) (lit.) | mp 895 °C (dec.) (lit.) | mp - | mp - |
| surface area 40-70 m2/g , typical range | surface area - | surface area - | surface area - |
Application
- To modify the glassycarbon electrode for the detection of As(III) at nanomolar concentrationrange.
- To prepare a robust photocatalyst along withcarbon nanospheres for dye degradation and hydrogen evolution reaction.
- As an electrodematerial in the preparation of supercapacitors.
General description
signalword
Danger
hcodes
Hazard Classifications
Aquatic Chronic 3 - Carc. 1A Inhalation - Resp. Sens. 1
Storage Class
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
flash_point_f
Not applicable
flash_point_c
Not applicable
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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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