Alternate Names: Copper(II) hydroxide, Copper Hydrate, Cupric Hydroxide
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|TGA - TGA||See accompanying chart picture|
This is less reactive than copper carbonate basic and more reactive than cupric oxide (CuO). This material does not contribute to CO2 bubbling in glazes.
Copper Hydroxide has a fairly complex decomposition as it is heated to melting point. Around 185C it loses about 18% weight as it decomposes to the heat stable CuO (cupric oxide) which remains stable until 1000C. Around 1050C about 6.5% is lost, likely involving partial loss of oxygen to form a mix of cuprous and cupric oxides.
Please check the accompanying curve to see the history of weight loss as this is fired (courtesty of Bob Hickerson, World Metal, LLC). You can see how much weight it lost, where it occurs and how fast it happens. Compare this with Copper Carbonate Basic to see the difference.
Copper In Calcite
TGA/DTA curve showing weight loss over temperature range
Out Bound Links
The hazards of using these materials in the ceramic process
Loses about 18% weight as it decomposes to the heat stable CuO
In Bound Links
Synthetic Malachite, CuCO3
Cupric Carbonate, Copper (II) Carbonate, Azurite