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8.05958

Manganese(IV) oxide

(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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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

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

flash_point_f

does not flash

flash_point_c

does not flash

pictograms

Health hazardExclamation mark
GHS08,GHS07

wgk

WGK 2

Certificates of Analysis (COA)

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Manganese dioxide
Cahiez Gerard, et al.
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2001)

Global Trade Item Number

SKUGTIN
805958100004022536388397
805958905004022536388403
805958010004022536388380