What is the importance of boiling the KMnO4 solution if it is stored for future use?

Question

experiment on quantitative determination of oxalate by permanganate titration

Answer 1

Boiling destroys oxidizable materials which may be present in the water or glassware.  You boil first, then standardize prior to use and storage.  The standard is more stable with time, since these materials have been destroyed.

Answer 2

Boiling KMnO4 will solidify the solution and very easy to stored.