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7722-64-7 - Potassium permanganate, 98% - A12170 - Alfa Aesar

A12170 Potassium permanganate, 98%

Codice CAS
7722-64-7
Sinonimi

Dimensioni Prezzo ($) Quantità Disponibilità
500g 33,40
2500g 112,00
10000g 368,00
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Potassium permanganate, 98%

MDL
MFCD00011364
EINECS
231-760-3

Proprietà chimiche

Formula
KMnO4
Peso formula
158.03
Punto di fusione
240° dec.
Densità
2.7
Sensibilità
Light Sensitive
Solubilità
Soluble in water.

Applicazioni

Potassium permanganate is an oxidizing agent, is used in the synthesis of organic compounds like ascorbic acid, chloramphenicol, saccharin, isonicotinic acid and pyrazinoic acid and in pharmaceutical intermediate. It is used to remove ferrous impurities from inorganic chemicals. It is also used in analytical chemistry as a reagent for redox titrations and to determine the kappa number of wood pulp. It is mostly used in water treatment and as a disinfectant. It also shows useful application as a chemiluminescence reagent.

Note

Light sensitive. Keep container tightly closed in a dry and well-ventilated place. Incompatible with strong reducing agents, powdered metals, peroxides, zinc, copper, alcohols, hydrogen fluoride and acids.

Letteratura

The oxidizing power of permanganate can be varied according to the pH of the reaction medium, the use of co-reagents, phase-transfer catalysis, etc. For a comprehensive review of permanganate oxidations in organic chemistry, with particular emphasis on novel applications, see: Synthesis, 85, (1987).

For phase-transfer oxidation, catalyzed by Tetra-n-butyl­ammonium hydrogen sulfate, A14047, of unfunctionalized benzylic methylenes, or benzylic alcohols to carbonyls, see: Synthesis, 915 (1987). Similar transformations have been carried out in the presence of triethylamine: Synthesis, 293 (1989).

For the use of (1-Hexadecyl)­trimethyl­ammonium bromide, A15235, as a surfactant in permanganate oxidations in micelles, see: Can. J. Chem., 67, 1381 (1989).

Classical permanganate cleavage of olefins is difficult to control, and normally proceeds to the highest possible oxidation level. Adsorption of the reagent on moist alumina has been found to attenuate its activity and allow good yields of aldehydes to be obtained. This would appear to provide a possible alternative to ozonolysis for this conversion: J. Org. Chem., 58, 2918 (1993). For use in the cis-hydroxylation of olefins, see Dicyclohexano-18-crown-6, A15344.

For phase-transfer assisted oxidation of primary amines to azo compounds, see: Bull. Soc. Chim. Belg., 102, 59 (1993).

In combination with CuSO 4, has been used as a reagent for the heterogeneous oxidative cyclization of the primary position of a primary-secondary diol to the lactone: J. Chem. Soc., Chem. Commun., 634 (1988); Org, Synth. Coll., 9, 462 (1998):

In combination with TMS chloride and benzyl triethylammonium chloride, generates a reagent for mild anti dichlorination of alkenes, conversion of epoxides to chlorohydrins, and selective oxidation of sulfides to sulfoxides: Tetrahedron Lett., 38, 2339 (1997).

Adcock, J. L.; Barnett, N. W.; Barrow, C. J.; Francis, P. S. Advances in the use of acidic potassium permanganate as a chemiluminescence reagent: A review. Anal. Chim. Acta 2014, 807, 9-28.

Wu, C.; Zhang, G.; Zhang, P.; Chang, C. C. Disintegration of excess activated sludge with potassium permanganate: feasibility, mechanisms and parameter optimization. Chem. Eng. J. 2014, 240, 420-425.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H272-H400-H410-H302

May intensify fire; oxidizer. Very toxic to aquatic life. Very toxic to aquatic life with long lasting effects. Harmful if swallowed.

Dichiarazioni precauzionali: P221-P210-P220-P273-P280-P264-P270-P301+P312-P330-P501a

Take any precaution to avoid mixing with combustibles. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep/Store away from clothing/combustible materials. Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection. Wash thoroughly after handling. Do not eat, drink or smoke when using this product. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. Rinse mouth. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Merck
14,7655
Classe di rischio
5.1
Gruppo di imballaggio
II
Codice tariffe armonizzato
2841.61
TSCA
Yes
RTECS
SD6475000

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