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Copper Hydroxide

Formula: Cu(OH)2
Alternate Names: Copper(II) hydroxide, Copper Hydrate, Cupric Hydroxide

Oxide Weight79.54
Formula Weight97.55
If this formula is not unified correctly please contact us.
TGA - TGA See accompanying chart picture

CAS 20427-59-2
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

Copper Phosphate2

TGA/DTA curve showing weight loss over temperature range

Out Bound Links

In Bound Links

By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Copper Hydroxide" descrip="" searchkey="Copper(II) hydroxide, Copper Hydrate, Cupric Hydroxide" loi="0.00" casnumber="42616-63-7"> <oxides> <oxide symbol="CuO" name="Cupric Oxide" status="" percent="81.530" tolerance=""/> </oxides> <volatiles> <volatile symbol="H2O" name="Water" percent="18.460" tolerance=""/> </volatiles> </material>

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