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I am trying to obtain more $\ce{KMnO4}$ from less amount by crystallization method. If I got the temperature I would easily make the desired amount. If I am choosing the wrong method, please tell me the correct one. I have 10 grams of potassium permanganate.

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  • $\begingroup$ You got a aqueous KMnO4 solution, right? $\endgroup$ – AstronAUT Sep 28 '15 at 16:16
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    $\begingroup$ When you say "obtain more...from less" I am interpreting this to mean: use a small amount of crystalline KMnO4 to seed a supersaturated water solution of that substance and help it to crystallize out. Is that right? $\endgroup$ – iad22agp Sep 28 '15 at 16:34
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Solubility of $\ce{KMnO4}$ at 20 °C: $6.34~\mathrm{g/100~g}$ water
Solubility of $\ce{KMnO4}$ at 10 °C: $4.31~\mathrm{g/100~g}$ water
see here

interpolation gives: $6.00~\mathrm{g/100~g}$ water at approximately 18.3 °C.

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