permanganate


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permanganate

a salt of permanganic acid

Permanganate

 

a salt of permanganic acid (HMnO4). Permanganate crystals are nearly black, with a greenish violet hue, while permanganate solutions are usually tinted the red-violet color of the Permanganate ion. Permanganates of sodium and bivalent metals dissolve freely in water, but KMnO4 is only sparingly soluble. Permanganates are extremely unstable upon heating. For example, KMnO4 decomposes at temperatures as low as 200°C according to the equation 2KMnO4 = K2MnO4 + MnO2+ O2.

Permanganates are strong oxidizing agents, especially in an acid medium; thus, for example, Mn(VII) reduces to Mn(II), as in MnSO4. Their use as oxidizing agents in chemistry is widespread, and in medicine permanganates are used as disinfectants and in the treatment of burns.

permanganate

[¦pər′maŋ·gə‚nāt]
(inorganic chemistry)
A purple salt of permanganic acid containing the MnO4- radical; used as an oxidizing agent and a disinfectant.
References in periodicals archive ?
Here, 20 mM potassium permanganate solution and 20 mM iodine solution were diluted at a 1 : 3 ratio with distilled water in order to prepare five dilutions.
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254], Potassium permanganate is not a strong oxidiser therefore not all the organic compounds were oxidised in the samples, compared with TOC.
The system consisted of two immiscible phases, namely, aqueous potassium permanganate and the benzene phase.
The alkaline permanganate solution consisting of sodium or potassium permanganate and its corresponding hydroxide salt.
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8g of potassium permanganate, a bottle containing glycerine, 7,900g of aluminium filings and powder and a mercury tilt switch, the court heard.
Tap water contains fluoride, chlorine, ammonia, potassium permanganate (all toxins), tri-halo-methanes (a carcinogen), bacteria, viruses and, at times (Sydney 1998), spores of cryptosporidium and Giardia (intestinal parasites).
RELATIONSHIP BETWEEN THE KAPPA NUMBER AND THE PERMANGANATE NUMBER OF THE WESTERN HEMLOCK KRAFT PULP