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Potclays Colours

Copper Oxide

4506
£5.64 each (£0.06 per g)
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£4.70 each (£0.05 per g)
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About

Copper II Oxide (Cupric Oxide) CuO

Transparent green under normal neutral or oxidising firing conditions except in alkaline glazes where turquoise is developed deepening to transparent Persian blue in strongly alkaline ones. Under reduction conditions a copper red colour is obtained (sometimes referred to as ox blood or sang de-boeuf). Carbonate form is weaker but gives less risk of specking.

Raw colour of powder: Black

Colour responses after firing:

  • Painted onto clay: Black
  • Painted onto biscuit:  Black or green if thin
  • Painted onto unfired glaze: Green
  • Mixed into glaze: Green
  • Reduction firing:  Red

Please note that these are the typical results,but combinations of oxides will produce different results depending upon the relative percentages of each used and the firing conditions in the kiln.  Also the underlying body colour will influence the resulting colour

We are unable to ship this product outside of the UK

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