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  Home >> Inorganic Chemistry Dictionary >> Cupric Hydroxide - Cyanamide

Cupric compounds
Compounds having copper in its higher (+2) oxidation state, e.g., cupric chloride is copper (II) chloride (CuCl2)

Cupric cyanide
Cu (CN)2, a green powder, insoluble in water; used in electroplating copper on iron. Also known as copper cyanide.

Cupric fluoride
CuF2, White crystalline powder used in ceramics and in the preparation of brazing and soldering fluxes. Also known as copper fluoride.

Cupric hydroxide
Cu (OH)2, blue macro or microscopic crystals; used as a mordant and pigment, in manufacture of many copper salts, and for staining paper. Also known as copper hydroxide.

Cupric nitrate
Cu (NO3)2. 3H2O, green powder or blue crystals soluble in water; used in electroplating copper on iron. Also known as copper nitrate.

Cupric oxide
CuO, black, monoclinic crystals, insoluble in water; used in making fibres and ceramics, and in organic and gas analyses. Also known as copper oxide.

Cupric sulphate
CuSo4, a water-soluble salt used in copper-plating baths; crystallizes as hydrous copper sulphate, which is blue. Also known as copper sulphate.

Cuprous bromide
Cu2Br2, white or gray crystals slightly soluble in cold water. Also known as copper bromide

Cuprous chloride
CuCl or Cu2Cl2, green, tetrahedral crystals, insoluble in water. Also known as copper chloride; resin of copper.

Cuprous compounds
Compounds having copper in its lower (+1) oxidation state; e.g., cuprous chloride is copper (1) chloride (CuCl).

Cuprous fluoride
Cu2F2, red, crystalline powder, melting point 908ºC. Also known as copper fluoride.

Cuprous oxide
Cu2O, an oxide of copper found in nature as cuprite and formed on copper by heat; used chiefly as a pigment and as a fungicide. Also known as copper oxide.

Curium
A highly toxic radioactive silvery element of the actinoid series of metals. A transuranic element, it is not found naturally on Earth but is synthesized from plutonium. Curium-244 and curium -242 have been used in thermoelectric power generators.


Cyanamide
NHCNH, an acidic compound that forms colourless needless, melting at 46ºC, soluble in water. Also known as urea anhydride.

Cyanate
A salt or ester of cyanic acid containing the radical CNO.

Cyanide
A salt of hydrogen cyanide, containing the cyanide ion.

Cyanide process
A method of extracting gold by dissolving it in potassium cyanide (to form the complex ion [Au (CN)2]. The ion can be reduced back to gold with zinc.

Cyanine dyes
Polymethine dyes containing M – C (=C – C)4 = N and relative system.

Cyanogas
Trade name for a powdered calcium cyanide, used as an insect and rodent killer.

Cyanogens bromide
CNBr, white crystals melting at 52ºC, vaporizing at 61.3ºC, and having toxic fumes that affect nerve centres; used in the synthesis of organic compounds and as a fumigant. Cyanogens C2N2 a colourless, poisonous gas. It is combustible and burns with a violet flame. C2N2 + 2O2 ® 2CO2 + N2.

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