How To Grow Copper Acetate Monohydrate Crystals

Natural Blue-Green Crystals Are Easy To Grow

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

What You Need To Grow Copper Acetate Crystals

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

How To Grow Copper Acetate Crystals

  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.