morsagh
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Pleochroism
Are there any pleochroic substances which are easy to synthesize and crystallize?
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bobm4360
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Isolate acetylsalicylic acid from an aspirin tablet with isopropanol. Quick, easy, and cheap
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Tsjerk
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Slighty off topic, but if you're at it anyway: Birefringence of tri glycine di-sulfate is also cool. glycine sulfate is easy to grow into big
crystals.
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Bezaleel
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In the inorganic realm, you could try hexamolybdato manganese. Just the addition of ammoniumparamolybdate to a solution of an Mn2+ salt will do.
Some crystals will appear yellow and some red under polarised light, depending on orientation.
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morsagh
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What solvent should i use for crystalization of that manganese salt?
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Bezaleel
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The reaction runs in water.
A picture of the phenomenon by a fellow-amateur chemist can be found in the thread on the Dutch forum.
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