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copper arsenide is a crystalline solid that is used in a variety of electronic applications such as semiconductors and photo optic devices. It is also an insecticide and fungicide.

copper arsenide is a chemical compound that consists of the elements copper (Cu) and arsenic (As). It can be formulated as Cu3(AsO4)2*4H2O, or as a less common, more abundant, form, copper arsenate (Cu5H2(AsO4)4*2H2O). It has a blue or bluish-green color.

It is one of the more toxic metals, so it should be handled with care. It is flammable and may cause eye, skin, or lung irritation. It should be stored in a well-ventilated area and kept out of reach of children and animals.

A symphony of arsenic and copper is often found in mixed sulphide minerals such as enargite (Cu3AsS4) and tennantite (Cu12As4S13). These complexes have high potential for extraction, but most mining companies are cautious about exploiting them because they can become a major environmental liability or significantly reduce the value of the ore due to the hefty costs associated with their treatment.

The best way to treat these materials is to first extract the ore from the ground, then separate the valuable mineral phases. This requires a number of techniques including pulp-potential adjustment (oxidative conditions), pH adjustments, and flotation.

There are a variety of pyrometallurgical processes that have been developed to process copper-arsenic sulphides. These include sulphidization roasting and halogenation, total pressure oxidation, and carbothermic reduction. Some of these processes have proven to be very effective at separating the arsenic phases from other valuable minerals.