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How To Grow Copper Acetate Monohydrate Crystals

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These are crystals of copper(II) acetate grown on a copper wire.

These are crystals of copper(II) acetate grown on a copper wire.

Choba Poncho, public domain
It's easy to grow blue-green monoclinic crystals of copper acetate monohydrate [Cu(CH3COO)2.H2O].
Difficulty: Easy
Time Required: a few days

Here's How:

  1. Dissolve 20 grams of copper acetate monohydrate in 200 ml of hot distilled water.
  2. If there is a scum of undissolved material, stir in a couple of drops of acetic acid.
  3. Cover the solution with a paper towel or coffer filter and allow it to cool in an undisturbed location.
  4. Blue-green crystals should start to spontaneously deposit within a couple of days. You can allow them to grow or can select one small crystal to use as a seed crystal to grow a larger single crystal.

What You Need

  • copper acetate monohydrate
  • hot distilled water
  • acetic acid (if necessary)

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