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Sigma-Aldrich

Potassium permanganate

ACS reagent, ≥99.0%, low in mercury

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About This Item

Empirical Formula (Hill Notation):
KMnO4
CAS Number:
7722-64-7
Molecular Weight:
158.03
EC Number:
231-760-3
MDL number:
MFCD00011364
UNSPSC Code:
12352312
PubChem Substance ID:
329755916
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

Assay

≥99.0%

form

solid

reaction suitability

reagent type: oxidant

impurities

≤0.005% N compounds
≤0.2% insolubles

pH

7.2-9.7 (20 °C, 20 g/L)

solubility

water: soluble 63.8 g/L at 20 °C(lit.)
acetone: soluble(lit.)
methanol: soluble(lit.)

anion traces

chloride, chlorate (as Cl-): ≤0.005%
sulfate (SO42-): ≤0.02%

cation traces

Hg: ≤0.05 ppm

SMILES string

[K+].[O-][Mn](=O)(=O)=O

InChI

1S/K.Mn.4O/q+1;;;;;-1

InChI key

VZJVWSHVAAUDKD-UHFFFAOYSA-N

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General description

Potassium permanganate (PP, KMnO4) is a dark violet colored crystalline solid. It is a strong oxidizing agent used in the oxidation of a wide range of organic compounds. PP is commonly used as a disinfectant to treat external infections in aquaculture. Corncobs pretreated with alkaline potassium permanganate solution showed high carbohydrate recovery due to the increased enzymatic hydrolysis of lignocellulose. The acidic potassium permanganate chemiluminescence detection has been employed for the detection of cannabinoids.

Application

Potassium permanganate was used in the preparation of layered MnO2 which may be employed as cathodic material in lithium secondary batteries.
It may be used as an oxidant in:
  • The reduction of polycyclic aromatic hydrocarbons found in coal tar pitches (CTPs).
  • Oxidation of decabromodiphenyl ether in sulfuric acid medium.
  • Oxidative cleavage of oximes to the corresponding carbonyl compounds potassium permanganate supported on kieselguhr.
  • Oxidation of progestagens.
Suitable for heterogeneous oxidations.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Ox. Sol. 2 - Repr. 2 - Skin Corr. 1 - STOT RE 2 Inhalation

Target Organs

Brain

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Reducing polycyclic aromatic hydrocarbons content in coal tar pitch by potassium permanganate oxidation and solvent extraction.
Wang W, et al.
Journal of Environmental Chemical Engineering, 3(3), 1513-1521 (2015)
Preparation of layered MnO2 via thermal decomposition of KMnO4 and its electrochemical characterizations.
Kim, S.H. et al.
Chemistry of Materials, 11(3), 557-563 (1999)
Oxidative Degradation of Decabromodiphenyl Ether (BDE 209) by Potassium Permanganate: Reaction Pathways, Kinetics, and Mechanisms Assisted by Density Functional Theory Calculations.
Shi J, et al.
Environmental Science & Technology, 49(7), 4209-4217 (2015)
Degradation of progestagens by oxidation with potassium permanganate in wastewater effluents.
Fayad PB, et al.
Chemistry Central Journal, 7, 84-84 (2013)
Screening of cannabinoids in industrial-grade hemp using two-dimensional liquid chromatography coupled with acidic potassium permanganate chemiluminescence detection.
Pandohee J, et al.
Journal of Separation Science, 38(12), 2024-2032 (2015)
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