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8.05958

Manganese(IV) oxide

Name: Manganese(IV) oxide
Brand: MM

(precipitated active) for synthesis

Synonym(s):

Manganese(IV) oxide, Manganese dioxide, Pyrolusite

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About This Item

Empirical Formula (Hill Notation):

MnO₂

CAS Number:

1313-13-9

Molecular Weight:

86.94

UNSPSC Code:

12352303

EC Index Number:

215-202-6

NACRES:

NA.22

MDL number:

MFCD00003463

Grade:

synthesis grade

Form:

powder

Solubility:

insoluble <0.001 g/L

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Properties

grade

synthesis grade

Quality Level

200

form

powder

potency

>3478 mg/kg LD₅₀, oral (Rat)

reaction suitability

reagent type: oxidant

solubility

insoluble <0.001 g/L

density

5.21 g/cm³ at 21 °C

bulk density

600‑800 kg/m³

storage temp.

2-30°C

SMILES string

[Mn](=O)=O

InChI

1S/Mn.2O

InChI key

NUJOXMJBOLGQSY-UHFFFAOYSA-N

Description

Application

Manganese(IV) oxide (MnO₂) can be used as an oxidizing agent for the oxidation of:

Allylic alcohols to α, β-ethylenic aldehydes, or ketones.
Propargylic alcohols to alkynic aldehydes or ketones.
Benzylic and heterocyclic alcohols to conjugated aromatic aldehydes or ketones.
Amines to aldehydes, imines, amides, and diazo compounds. Methyl arenes to form primary amides in the presence of urea and oxygen.
MnO₂ can also be used to synthesize disubstituted oxazolines from aldoximes via in situ nitrile oxide formation. Non-activated cyclic and acyclic alcohols oxidized to ketone analogs using stoichiometric MnO₂ and a ruthenium catalyst.

Analysis Note

Assay (iodometric, calc. on dried substance): ≥ 90.0 %
Loss on drying: ≤ 3.5 %
Oxidation Activity: passes test

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Warning

Hazard Classifications

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

target_organs

Brain

Storage Class

13 - Non Combustible Solids

wgk

WGK 2

flash_point_f

does not flash

flash_point_c