Generic Name: Potassium Gold
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Canada: 1 to 2 days
Worldwide: 3 to 5 days
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Potassium cyanide for sale is a compound with the formula KCN.
This colorless crystalline salt, similar in appearance to sugar, is highly soluble in water.
Most KCN for sale online is used in gold mining, organic synthesis, and electroplating.
Smaller applications include jewelry for chemical gilding and buffing.
Potassium cyanide is highly toxic. The moist solid emits small amounts of hydrogen cyanide due to hydrolysis, which smells like bitter almonds.
Not everyone, however, can smell this; the ability to do so is a genetic trait.
The taste of potassium cyanide has been described as acrid with a burning sensation.
In aqueous solution, KCN is dissociated into hydrated potassium (K+) ions and cyanide (CN−) ions. The common form of solid KCN, stable at ambient pressure and temperature, has the same cubic crystal structure as sodium chloride, with each potassium ion surrounded by six cyanide ions, and vice versa. Despite the cyanide ions being diatomic, and thus less symmetric than chloride, they rotate so rapidly, their time-averaged shape is spherical. At low temperature and high pressure, this free rotation is hindered, resulting in a less symmetric crystal structure with the cyanide ions arranged in sheets
KCN and sodium cyanide (NaCN) are widely used in organic synthesis for the preparation of nitriles and carboxylic acids, particularly in the von Richter reaction. It also finds use for the synthesis of hydantoins, which can be useful synthetic intermediates, when reacted with a carbonyl compound such as an aldehyde or ketone in the presence of ammonium carbonate.
KCN is used as a photographic fixer in the wet plate collodion process. The KCN dissolves silver where it has not been made insoluble by the developer. This reveals and stabilizes the image, making it no longer sensitive to light. Modern wet plate photographers may prefer less toxic fixers, often opting for the less toxic Sodium thiosulphate, but KCN for sale is still used.
Potassium gold cyanide
Main article: Potassium gold cyanide
In gold mining, KCN forms the water-soluble salt potassium gold cyanide (or gold potassium cyanide) and potassium hydroxide from gold metal in the presence of oxygen (usually from the surrounding air) and water:
4 Au + 8 KCN + O2 + 2 H2O → 4 K[Au(CN)2] + 4 KOH
A similar process uses NaCN to produce sodium gold cyanide (NaAu(CN2)).
A New Process for Making Potassium Gold Cyanide from Gold Particles:
The practical feasibility of a process involving the reaction of oxygen with gold particles in a potassium cyanide solution to produce potassium gold cyanide has been explored. The influence of temperature, cyanide concentration, and particle size on the gold dissolution was studied. The experimental results suggest that the rate is limited by the diffusion of oxygen to the gold surface. Gold particles (size between 230 and 325 mesh) can be converted with oxygen to potassium gold cyanide in less than two hours in 2 M KCN solution at 60°C. The implementation of a closed cyanide loop process is also discussed.
Potassium gold cyanide is an odorless white powder.
Potassium gold cyanide for sale is highly soluble in water with a value of 140 g/l.
Kaliumgoldcyanid, Kálium-arany-cianid, potassium bis(cyano-kappaC)aurate(1-), Potassium dicyanoauate, potassium dicyanoaurate, Potassium dicyanoaurate(I), potassium gold(1+) dicyanide, Potassium dicyan
Potassium gold cyanide is used in electroplating and in photography. This metal is widely used in organic synthesis for the preparation of nitriles and carboxylic acids. Potassium gold cyanide is also largely utilized in the extraction of gold and silver from ores and also as a fumigant and insecticide