Potassium Permanganate

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potassium permanganate

[pə′tas·ē·əm pər′man·gə‚nāt]
(inorganic chemistry)
KMnO4 Highly oxidative, water-soluble, purple crystals with sweet taste; decomposes at 240°C; and explodes in contact with oxidizable materials; used as a disinfectant and analytical reagent, in dyes, bleaches, and medicines, and as a chemical intermediate. Also known as purple salt.

Potassium Permanganate


KMnO4, a salt; dark violet crystals. Density, 2.703 g/cm3. Soluble in water (6.4 g per 100 g H20 at 20°C and 22.2 g at 60°C; solutions are red-violet in color), and also in methanol, acetic acid, and acetone. Potassium permanganate is a strong oxidizing agent; an explosion may occur when KMnO4 is mixed with concentrated H2SO4, as well as with certain organic substances, such as glycerol. Potassium permanganate is obtained by fusing pyrolusite, MnO2, with KOH and subsequent electrolytic oxidation of the resultant K2MnO4. (For information on the use of KMnO4, see PERMANGANATES.)

References in periodicals archive ?
In South America, the only region of the world where coca is cultivated, the INCB's Project Cohesion focuses on monitoring the imports of potassium permanganate to cocaine processing areas.
254], Potassium permanganate is not a strong oxidiser therefore not all the organic compounds were oxidised in the samples, compared with TOC.
The spectral changes during the oxidation of the aldehydic acids by potassium permanganate in alkaline medium (pH [approximately equal to] 12) was monitored in a thermostated cell compartment within [+ or -] 0.
The pigments were determined to be melanin by bleaching with potassium permanganate, positive HMB-45 stain, and negative Berlin-blue stain.
The process involves sulfuric acid and potassium permanganate, which have been in common use since the 1890s.
Effort Clean out water butts and add potassium permanganate or Biotal Refresh to keep the water clean and smelling sweet.
The concentration of organic substances is established with potassium permanganate in the interval (10 / 26) mg/l K Mn O4.
San Francisco Delta waters were treated with ozone, chlorine dioxide, and potassium permanganate to reduce subsequent halogenated DBP formation.
Purple benzene was prepared by using dicyclohexyl-18-crown-6 as PTC from solid potassium permanganate by Sam and Simmons (1972).
Acetic acid, perchloric acid, and potassium permanganate were purchased from Merck, and methanol was from LabScan.
5 mL of 1% potassium permanganate solution, followed by addition of a few drops of 2N hydrochloric acid, turns a pink permanganate solution colorless with effervescence.