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217646

Sigma-Aldrich

Manganese(IV) oxide

activated, ~85%, <10 μm

Sinonimo/i:

Manganese dioxide

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About This Item

Formula empirica (notazione di Hill):
MnO2
Numero CAS:
1313-13-9
Peso molecolare:
86.94
Numero CE:
215-202-6
Numero MDL:
MFCD00003463
Codice UNSPSC:
12352302
ID PubChem:
329752205
NACRES:
NA.21
Prezzi e disponibilità al momento non sono disponibili

Grado

for analytical purposes

Saggio

~85%

Stato

powder

Dimensione particelle

<10 μm

Punto di fusione

535 °C (dec.) (lit.)

Stringa SMILE

O=[Mn]=O

InChI

1S/Mn.2O
NUJOXMJBOLGQSY-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

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.

Applicazioni

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.

Pittogrammi

Health hazardExclamation mark
GHS08,GHS07

Avvertenze

Warning

Indicazioni di pericolo

H302 + H332,H373

Classi di pericolo

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

Organi bersaglio

Brain

Codice della classe di stoccaggio

13 - Non Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

does not flash

Punto d’infiammabilità (°C)

does not flash

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Certificati d'analisi (COA)

Lot/Batch Number
MKCT8463
MKCP1516
MKCP0202
0000049588
0000050194

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Questions

1–2 of 2 Questions  

  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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