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243442

Sigma-Aldrich

Manganese(IV) oxide

ReagentPlus®, ≥99%

Synonym(s):

Manganese dioxide

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₪336.00
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100 G
₪336.00
500 G
₪778.00

About This Item

Empirical Formula (Hill Notation):
MnO2
CAS Number:
1313-13-9
Molecular Weight:
86.94
EC Number:
215-202-6
MDL number:
MFCD00003463
UNSPSC Code:
12352303
PubChem Substance ID:
329752459
NACRES:
NA.21
Assay:
≥99%
form:
crystalline powder
granular

₪336.00

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Quality Level

100

product line

ReagentPlus®

Assay

≥99%

form

crystalline powder
granular

mp

535 °C (dec.) (lit.)

SMILES string

O=[Mn]=O

InChI

1S/Mn.2O

InChI key

NUJOXMJBOLGQSY-UHFFFAOYSA-N

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General description

Manganese(IV) oxide (MnO2) is an eco-friendly chemical having a high theoretical specific capacitance.[1]

Application

Manganese(IV) oxide has been used as a catalyst for the production of gaseous oxygen and liquid water from 30% H2O2 solution.[2]

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

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Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Warning

Hazard Statements

H302 + H332,H373

Hazard Classifications

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

Target Organs

Brain

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 2

Flash Point(F)

does not flash

Flash Point(C)

does not flash

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Certificates of Analysis (COA)

Lot/Batch Number
MKCT3639
MKCV2906
MKCR0032
MKCP0207
MKCN7575

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Manganese dioxide (MnO(2)) particles 2-3 nm in size were deposited onto a porous "activated microwave expanded graphite oxide" (aMEGO) carbon scaffold via a self-controlled redox process. Symmetric electrochemical capacitors were fabricated that yielded a specific capacitance of 256 F/g (volumetric:
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This study examined the reaction of methylene blue (MB) with tunneled manganese oxide pyrolusite regarding pH and reaction time. MB was cleaved through N-demethylation, in which reaction azure B (AB), azure A (AA), azure C (AC), and thionin (TH) were
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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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