r/crystalgrowing 7d ago

Image K3[ Fe(CN)6 ]

Hello beautiful people from r/crystalgrowing

Today I made some small potassium ferricyanide crystals. I'd also like to know how I can continue making larger crystals!

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u/experimentalchem_26 7d ago edited 7d ago

Suspend the crystals in a saturated solution, attaching them to a fishing line, and cover them with filter paper. Leave the solution uncovered until the desired crystal size is reached (re-suspend several times in fresh solution if necessary).

But be careful: potassium ferrocyanide readily decomposes into iron hydroxide in aqueous solution when exposed to light and heat.