It is a flexible and potent oxidant that may be used to classify a variety of substances by direct or indirect titration.
Self-indicator:
Potassium Permanganate has a unique utility in that it works as a self-indicator.
Titration of permanganate must be done in a strong acid solution.
When employed in redox titration, it is reduced to a brown-colored ion (in acidic solutions) near the endpoint, and the color transformation may be seen fast.
A separate indication for permanganate titration is not required because the indicator's function is to identify endpoints.
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