Cupric bromide sulfide

Ores of copper native copper, cuprite, chalcocite, chalcopyrite, malachite, azurite. Metallurgy of ores containing native copper, oxide and carbonate ores, sulfide ores. Gangue, flux, flotation, roasting of ores, matte, blister copper. Cupric compounds copper sulfate (blue vitriol, bluestone), Bordeaux mixture, cupric chloride, cupric bromide, cupric hydroxide. Test for cupric ion with Fehling s solution. Cuprous compounds cuprous chloride, cuprous bromide, cuprous iodide, cuprous oxide. Covalent-bond structure of cuprous compounds. 

The allyl bromides could be formed by treatment of 2-hydroxyalkylacrylates with hydrogen bromide, with" or without addition of concentrated sulfuric acid. This transformation can also be achieved by other reagents, such as vV-bromosuccinimide/dimethyl sulfide, cupric bromide on silica," phosphorus trimide 44 and LiBr/H2S04.4 Y-Bromosuccinimide/dimethyl sulfide has also been used to convert 2-hydroxyalkylvinyl phenyl sulfones into the allyl bromides. 4 ... 

Consequently, a suspension of copper sulfide is completely clarified by cyanides. This fact may be used to detect cyanides even in the presence of ferrocyanides, ferricyanides, iodides, bromides, chlorides, and thiocyanates. The test may be made on paper impregnated with cupric sulfide the sensitivity is greater. 

The number and variety of ion-specific electrodes is rapidly increasing with no end in sight. At the present writing, it is possible to use such electrodes to determine, either by direct or indirect measurement, ionic concentrations of the following species ammonia, bromide, cadmium, calcium, chloride, cupric, cyanide, fluoride, fluoroborate, iodide, lead, nitrate, perchlorate, potassium, sulfide, sodium, sulfur dioxide, and thiocyanate, all by direct measurement, and by titration methods aluminum, boron, chromium, cobalt, magnesium, mercury, nickel, phosphate, silver, sulfate, and zinc. 

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