Potassium permanganate

Potassium permanganate
Names
	IUPAC name Potassium manganate(VII)
	Systematic IUPAC name Potassium permanganate
	Other names Chameleon mineral; Condy's crystals; Permanganate of potash; Hypermangan; Purple potion powder; Permanganic acid, potassium salt; Purple salt;
Identifiers
CAS Number	7722-64-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:231501;
ChEMBL	ChEMBL3833305;
ChemSpider	22810;
DrugBank	DB13831;
ECHA InfoCard	100.028.874
EC Number	231-760-3;
KEGG	D02053 ;
PubChem CID	516875;
RTECS number	SD6475000;
UNII	00OT1QX5U4;
UN number	1490
CompTox Dashboard (EPA)	DTXSID2034839 ;
	InChI InChI=1S/K.Mn.4O/q+1;;;;;-1 Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N ;
	SMILES [K+].[O-][Mn](=O)(=O)=O;
Properties
Chemical formula	KMnO4
Molar mass	158.032 g·mol−1
Appearance	Purplish-bronze-gray needles; purple in solution
Odor	odorless
Density	2.7 g/cm3
Melting point	240 °C (464 °F; 513 K) (decomposes)
Solubility in water	76 g/L (25 °C); 250 g/L (65 °C)
Solubility	soluble in organic solvents; decomposes in alcohol
Magnetic susceptibility (χ)	+20.0·10−6 cm3/mol
Refractive index (nD)	1.59
Structure
Crystal structure	Orthorhombic, oP24
Space group	Pnma, No. 62
Lattice constant	a = 0.909 nm, b = 0.572 nm, c = 0.741 nm
Formula units (Z)	4
Thermochemistry
Heat capacity (C)	119.2 J/mol K
Std molar; entropy (S⦵298)	171.7 J K−1 mol−1
Std enthalpy of; formation (ΔfH⦵298)	−813.4 kJ/mol
Gibbs free energy (ΔfG⦵)	−713.8 kJ/mol
Pharmacology
ATC code	D08AX06 (WHO) V03AB18 (WHO)
Hazards
	GHS labelling:
Pictograms
NFPA 704 (fire diamond)	2 0 2 OX
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	1090 mg/kg (oral, rat)
Related compounds
Other anions	Potassium pertechnetate; Potassium perrhenate
Other cations	Sodium permanganate; Ammonium permanganate; Calcium permanganate; Silver permanganate
Related manganates	Potassium hypomanganate; Potassium manganate
Related compounds	Manganese heptoxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Potassium permanganate
Clinical data
License data	US DailyMed: Potassium_permanganate;
Identifiers
CompTox Dashboard (EPA)	DTXSID2034839 ;
ECHA InfoCard	100.028.874

Potassium permanganate is an inorganic compound with the chemical formula KMnO₄. It is a purplish-black crystalline salt, which dissolves in water as K⁺ and MnO⁻
₄ ions to give an intensely pink to purple solution.

Potassium permanganate is widely used in the chemical industry and laboratories as a strong oxidizing agent, and also traditionally as a medication for dermatitis, for cleaning wounds, and general disinfection. It is on the World Health Organization's List of Essential Medicines.^[6] It has a great variety of niche uses such as biocide for water treatment purposes and for tanning and dyeing cloth.^[1] In 2000, worldwide production was estimated at 30,000 tons.

It is also referred to as chameleon mineral, Condy's crystals, permanganate of potash, hypermangan, purple potion powder, permanganic acid (potassium salt),^[1] and purple salt.^[1]

^ ^a ^b ^c ^d ^e Cite error: The named reference k821 was invoked but never defined (see the help page).
^ Burriel F, Lucena F, Arribas S, Hernández J (1985). Química Analítica Cualitativa [Qualitative Analytical Chemistry] (in Spanish). Ediciones Paraninfo, S.A. p. 688. ISBN 84-9732-140-5.
^ ^a ^b ^c Haynes WM, ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). CRC Press. ISBN 978-1439855119.
^ Hocart R, Mathieu-Sicaud A (1945). "A stabilization factor in the polymorphism of ammonium nitrate". Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences [Weekly Reports of the Sessions of the Academy of Sciences] (in French). 221: 261–263.
^ Chambers M. "Potassium permanganate [USP:JAN] – Similar structures search, synonyms, formulas, resource links, and other chemical information". ChemIDplus: A Toxnet database. U.S. National Library of Medicine. ChemIDplus – CAS: 7722-64-7 InChi: VZJVWSHVAAUDKD-UHFFFAOYSA-N. Archived from the original on 13 August 2014. Retrieved 9 May 2018.
^ World Health Organization (2019). World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.

[k821-1] Cite error: The named reference k821 was invoked but never defined (see the help page).

[Burriel_1985-2] Burriel F, Lucena F, Arribas S, Hernández J (1985). Química Analítica Cualitativa [Qualitative Analytical Chemistry] (in Spanish). Ediciones Paraninfo, S.A. p. 688. ISBN 84-9732-140-5.

[crc-3] Haynes WM, ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). CRC Press. ISBN 978-1439855119.

[4] Hocart R, Mathieu-Sicaud A (1945). "A stabilization factor in the polymorphism of ammonium nitrate". Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences [Weekly Reports of the Sessions of the Academy of Sciences] (in French). 221: 261–263.

[5] Chambers M. "Potassium permanganate [USP:JAN] – Similar structures search, synonyms, formulas, resource links, and other chemical information". ChemIDplus: A Toxnet database. U.S. National Library of Medicine. ChemIDplus – CAS: 7722-64-7 InChi: VZJVWSHVAAUDKD-UHFFFAOYSA-N. Archived from the original on 13 August 2014. Retrieved 9 May 2018.

[WHO21st-6] World Health Organization (2019). World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.

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