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Author: Subject: Pleochroism
morsagh
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[*] posted on 16-1-2017 at 13:50
Pleochroism


Are there any pleochroic substances which are easy to synthesize and crystallize?
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bobm4360
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[*] posted on 17-1-2017 at 00:35


Isolate acetylsalicylic acid from an aspirin tablet with isopropanol. Quick, easy, and cheap:cool:
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Tsjerk
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[*] posted on 17-1-2017 at 01:46


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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[*] posted on 23-1-2017 at 07:33


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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[*] posted on 24-1-2017 at 06:42


What solvent should i use for crystalization of that manganese salt?
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Bezaleel
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[*] posted on 26-1-2017 at 09:18


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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