Cyanide, cadmium

In the presence of magnesium, cadmium cyanide causes the mixture to incandesce when it is heated. The positive enthalpy of formation of this compound leads one to think that it is an unstable compound. No accident involving this instability has ever been reported. 

The deposition of cadmium in the form of an amalgam from a cadmium cyanide solution involves the overall reaction... 

Magnesium reacts with incandescence on heating with cadmium cyanide, cobalt cyanide, copper cyanide, lead cyanide, nickel cyanide and zinc cyanide. With gold... 

DSA-02 oxide-coated Ti anode (DSA = Dimensionally Stable Anode) is placed, thus creating a large cathode volume. The effluent solution flows perpendicularly through the electrodes with a typical flow rate of 0.5 dm3 s-1. The flowthrough metal electrodes have an active area approximately 15 times their geometric area. The cell allows air sparging to increase the mass-transfer. The current efficiency is about 40% when the inlet concentration of the metal ions is 150 to 1500 ppm and the concentration at the out-let is about 50 ppm. The cell is currently used for the treatment of recirculated wash-waters from acid copper, copper cyanide, zinc cyanide, zinc chloride, cadmium sulphate, cadmium cyanide and precious metal plating and washwaters from electroless copper deposition. Since the foam metal electrodes are relatively expensive the electrodes... 

Cyanide occurs most commonly as hydrogen cyanide in water, although it can also occur as the cyanide ion, alkali and alkaline earth metal cyanides (potassium cyanide, sodium cyanide, calcium cyanide), relatively stable metallocyanide complexes (ferricyanide complex [Fe(CN)6]-3), moderately stable metallocyanide complexes (complex nickel and copper cyanide), or easily decomposable metallocyanide complexes (zinc cyanide [Zn(CN)2], cadmium cyanide [Cd(CN)2]). Hydrogen cyanide and cyanide ion combined are commonly termed free cyanide. The environmental fate of these cyanide compounds varies widely (Callahan et al. 1979). 

Ammonium hexacyanoferrate(II), 2577 f Arsine, 0100 Azido-2-butyne, 1473 3-Azidopropyne, 1114 c /.v-A/obcn/cnc, 3484 Azoxybenzene, 3485 Barium azide, 0214 Benzenediazonium nitrate, 2275 Benzotriazole, 2269 Borane, 0135 Bromine azide, 0256 f 3-Bromopropyne, 1090 f 1,2-Butadiene, 1479 f 1,3-Butadiene, 1480 f Buten-3-yne, 1423 f 1-Butyne, 1481 f 2-Butyne, 1482 Cadmium azide, 3957 Cadmium cyanide, 0588 Cadmium fulminate, 0589 Cadmium nitride, 3960... 

Cadmium cyanide is used as an electrolyte for electrodeposition of thin metalhc cadmium coatings on metals to protect against corrosion. 

Cadmium cyanide may be prepared by treating a concentrated aqueous solution of cadmium chloride or cadmium nitrate with potassium cyanide or sodium cyanide. The white precipitate obtained is filtered, washed and dried. 

Cadmium cyanide reacts with dilute mineral acids, evolving hydrogen cyanide ... 

Cadmium may be measured by various instrumental analysis (see cadmium). Cyanide may be extracted by distilling an acidified solution of cadmium cyanide and then purging the liberated hydrogen cyanide with air, passing it into a scrubbing solution of caustic soda. Cyanide in the scrubbing solution is... 

Cadmium cyanide, CdCCN), is analogous to Si02 with respect to the AB2 composition, the tetrahedral confiugration of A, the bridging behavior of B between a pair of A atoms, and the ability to build a three-dimensional framework in which cavities of molecular scale are formed. Cadmium caynide itself crystallizes in a cubic system of the anticuprite type, in which two identical fr-cristobalite-like frameworks interpenetrate each other without any cross-connection the cavity formed in one framework is filled by the other. When we replace one of the frameworks by appropriate guest molecules such as those of CCl, CCl CH, etc., we may obtain a novel clathrate structure with an adamantane-like cavity, as shown in Fig. 1 [1], Our results including those recently obtained are summarized in Table 1. 

Cadmium Cyanide Cadmium cyanide Cadmium oxide Sodium cyanide Sodium hydroxide... 

Cadmium cyanide. In January, 1989, API Industries in Chicago, installed a 5 gpm ARO system to evaluate cadmium cyanide recovery. Complete results are not available at this time. Laboratory tests and economic projections indicate that the rinses and bath are reclaimable and payback from ARO should be one year or less. 

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