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637025

Sigma-Aldrich

Cobalt(II,III) oxide

nanopowder, <50 nm particle size (SEM), 99.5% trace metals basis

Sinónimos:

Cobalt tetraoxide, Cobaltic-cobaltous oxide, Tricobalt tetraoxide

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About This Item

Fórmula lineal:
~Co3O4
Número de CAS:
1308-06-1
Peso molecular:
240.80
Número MDL:
MFCD00010939
Código UNSPSC:
12352302
ID de la sustancia en PubChem:
24882820
NACRES:
NA.23
En este momento no podemos mostrarle ni los precios ni la disponibilidad

Nivel de calidad

200

Ensayo

99.5% trace metals basis

Formulario

nanopowder

superficie

40-70 m2/g , typical range

tamaño de partícula

<50 nm (SEM)

mp

895 °C (dec.) (lit.)

densidad

6.11 g/mL at 25 °C (lit.)

densidad aparente

0.57 g/mL

aplicaciones

battery manufacturing

cadena SMILES

O=[Co].O=[Co]O[Co]=O

InChI

1S/3Co.4O

Clave InChI

LBFUKZWYPLNNJC-UHFFFAOYSA-N

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Descripción general

Cobalt oxide is a p-type semiconductor thatbelongs to the normal spinel crystal structure with cubic close packing ofoxide ions. It has variable oxidation states and multiple band gapenergies (2.28eV and 1.57eV). It is paramagnetic at room temperature.

Aplicación

Cobalt(II,III) oxide nanoparticles can be used:

  • 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.

Pictogramas

Health hazard
GHS08

Palabra de señalización

Danger

Frases de peligro

H334,H350i,H412

Clasificaciones de peligro

Aquatic Chronic 3 - Carc. 1A Inhalation - Resp. Sens. 1

Código de clase de almacenamiento

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
MKCV4829
MKCW8316
MKCS7814
MKCS4970
MKCP7794

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Chemphyschem : a European journal of chemical physics and physical chemistry, 22(7), 675-683 (2021-01-27)
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Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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/449/386/product-dating-information-mk.pdf

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