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Molecular formula: KMnO4
CAS No: 7722-64-7
Dark purple granular or needle shaped or flow sand-like crystals with metallic sheen. Soluble in water, decomposed by alcohol and peroxidate. Powerful oxidizer. Contacting, rubbing, or colliding with organic materials, it may cause burning or explosion.
GB/T1608-1997 / BP2000 / BP93
Main content: 99.3% min
Water insoluble matter: 0.20% max
Sulfate (as SO4) : 0.05% max
Chloride matter (as Cl) : 0.01% max
Potassium permanganate is used as an oxidizing agent in many different kinds of chemical reactions in a laboratory and in industry. It is also used as a disinfectant and in deodorizers and dyes. It is used to treat some parasitic diseases of fish, and used in treatment of drinking water, as well as an antidote in phosphorus poisoning. It can be used as a reagent for the synthesis of many different kinds of chemical compounds. For example, a dilute solution of KMnO4 can convert an organic compound with a carbon-carbon double bond into a diol (glycol) compound. Stronger permanganate solutions can oxidize a methyl group on an aromatic ring to a carboxyl group. It has also been used to make cocaine 100% pure. In analytical chemistry, a standardized aqueous solution of KMnO4 is sometimes used as an oxidizing titrant for redox titrations due to its deep purple color. Deep purple-colored permanganate can be reduced to a light pink Mn cation in an acidic solution, where Mn is in a +2 oxidation state. In an alkaline solution, permanganate can be reduced to MnO, a brown precipitate in which Mn is in a +4 oxidation state.
An aqueous solution of Potassium permanganate can be mixed with an aqueous solution of pseudoephedrine hydrochloride to produce methcathinone.
In a diluted solution, it can be used as a mouthwash (1/4%) , or to disinfect the hands (1%) .
When mixed with water, it is can also be used as a catalyst with T-Stoff for rocket propulsion. In this usage, it is known as Z-Stoff.
It is used as a reagent to determine the Kappa number of wood pulp.