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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.)

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
- Potassium permanganate (KMnO4) belongs to the substances which are particularly dangerous to the environment with high fish toxicity.
El OG se obtuvo por oxidacion del grafito con KMnO4 en medio acido, Posteriormente fueron caracterizadas todas las fracciones obtenidas, asi como el grafito original y el OG por medio de las tecnicas de difraccion de rayos X (DRX), espectroscopia Raman (ER), y analisis termogravimetrico (ATG-ATD), infrarrojo (FT-IR),
Pre treated sodium hydroxide fiber is treated with 0.01265 M KMnO4 solution in presence of 0.003752 M [H.sub.2]S[O.sub.4] for a period of 2 minutes.
Consumed by KMnO4 Calcium Potassium Magnesium Phosphorus Sulphur Nitrogen Iron Manganese Variables Total Nitrite Total Alkaline Alkalinity Hardness Hardness Temperature -0.253 +0.854 ** -0.170 ** +0.140 ** pH -0.380 -0.496 -0.770 ** -0.946 ** Carbonate +0.173 +0.443 +0.790 ** +0.975 ** Bicarbonate +0.355 +0.421 ** +0865 * +0.969 ** Chloride -0.003 +0.849 * +0.570 * +0.762 ** Total Alkalinity +0.581 +0.553 * +0.273 ** Nitrite +0.433 +0.607 ** Total Hardness 0.803 ** Alkaline Hardness Total Solids T.
Sackets of KMnO4 were impregnated into the pouches as ethylene absorbent at a ratio of 1g/kg of fruit [5] and [6].
Sectioned material was stained for either 2 or 20 minutes with 1% KMnO4 in 1% sodium citrate (Donaldson, 2002) and viewed with a Zeiss EM 10 transmission microscope using an accelerating voltage of 60 kV.
Nitrobenzene in the solutions was determined spectrophotometrically (v=38 440 [cm.sup.-1]), while for oxalic acid titration with KMnO4 and for glyoxylic acid the iodometric method was used.
The reaction of Lu with potassium ferricyanide (K3Fe(CN)6) has been used for the detection of mezlocillin sodium [43] and ceftezole sodium [44] whereas, with periodate(IO4) for amikacin sulfate [45] and vitamin A [46] and with potassium permanganate (KMnO4) for fenpyroximate [47], azoxystrobin [48] and thyroxine (in micellar medium) [49].
After that juveniles were equally distributed in experimental tanks; all tanks were cleaned with KMnO4. Tanks were covered with net to stop escaping out and artificial oxygen was provided through aeration into the tanks.
An amount of 300 mg KMNO4 was added and left overnight, while the conical flask was being surrounded by ice bath.