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217646

Sigma-Aldrich

Mangan(IV)-oxid

activated, ~85%, <10 μm

Synonym(e):

Mangandioxid

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About This Item

Empirische Formel (Hill-System):
MnO2
CAS-Nummer:
1313-13-9
Molekulargewicht:
86.94
EG-Nummer:
215-202-6
MDL-Nummer:
MFCD00003463
UNSPSC-Code:
12352302
PubChem Substanz-ID:
329752205
NACRES:
NA.21
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Qualität

for analytical purposes

Assay

~85%

Form

powder

Partikelgröße

<10 μm

mp (Schmelzpunkt)

535 °C (dec.) (lit.)

SMILES String

O=[Mn]=O

InChI

1S/Mn.2O

InChIKey

NUJOXMJBOLGQSY-UHFFFAOYSA-N

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Allgemeine Beschreibung

Manganese (IV) oxide is a low cost, low toxic and easy handling inorganic compound widely used as a mild oxidant in organic chemistry. It is mainly used for the selective oxidation of activated alcohols to form α, β-unsaturated aldehydes and ketones.

Anwendung

Manganese (IV) oxide can be used as selective oxidizing agent:
  • In conversion of allylic alcohols to α, β-ethylenic esters or amides.
  • In oxidation of allylic alcohols to α,β-ethylenic aldehydes or ketones.
  • In oxidation of propargylic alcohols, saturated alcohols and benzylic or heterocyclic alcohols.
  • Manganese (IV) oxide can also be used:,In hydration of nitriles to amides.

Piktogramme

Health hazardExclamation mark
GHS08,GHS07

Signalwort

Warning

Gefahreneinstufungen

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - STOT RE 2 Inhalation

Zielorgane

Brain

Lagerklassenschlüssel

13 - Non Combustible Solids

WGK

WGK 2

Flammpunkt (°F)

does not flash

Flammpunkt (°C)

does not flash

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
MKCT8463
MKCP1516
MKCP0202
0000049588
0000050194

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Ross W Hogue et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 23(57), 14193-14199 (2017-06-09)
Self-assembly of 1:1:2 M
Synthesis, characterization, and supercapacitor studies of manganese (IV) oxide nanowires.
Yousefi T, et al.
Materials Science in Semiconductor Processing, 16(3), 868-876 (2013)
Mohammad Mahdi Najafpour
Dalton transactions (Cambridge, England : 2003), 40(15), 3805-3807 (2011-03-02)
A soluble form of colloidal manganese(IV) oxide showed efficient oxygen evolution or water oxidation in presence of oxone, H(2)O(2), cerium(IV) ammonium nitrate and tris(2,2'-bipyridyl)ruthenium(III).
Water dispersible conducting nanocomposites of poly (N-vinylcarbazole), polypyrrole and polyaniline with nanodimensional manganese (IV) oxide.
Biswas M, et al.
Synthetic Metals, 105(2), 99-105 (1999)
Liling Jing et al.
Scientific reports, 10(1), 14937-14937 (2020-09-12)
Silver nanoparticles (Ag NPs) system capable of exhibiting different particle size at different temperature was developed, which depended on the extent of Diels-Alder (DA) reaction of bismaleimide with furan. Thus, Ag NPs were functionalized on the surface by a furyl-substituted
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Questions

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  1. 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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  2. 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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