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Cyanides
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AbstractThe industrially important cyanides are hydrogen, sodium, potassium, and calcium cyanides. Hydrogen cyanide is the most used. It is manufactured by the Andrussow process. Hydrogen cyanide is classified as a Class A Flammable Poison by the U.S DOT. All of the cyanides are poisonous. Uses of HCN include the production of acetone cyanohydrin for acrylic plastics, adiponitrile for nylon, sodium cyanide for gold recovery, methionine for animal feed, cyanuric chloride for pesticides and for chelating agents. Sodium cyanide is widely used in the recovery of gold. The high price of gold has caused a great increase in the demand for sodium cyanide. There is environmental concern in regard to the use of NaCN in gold recovery and pressure to prohibit its use is mounting. KCN is used for electrolytic refining of platinum, fine silver plating, separation of gold, silver, and copper from platinum, and for metal coloring. Other cyanides discussed are lithium, rubidium, cesium, ammonium, and other alkali metal compounds.
Title: Cyanides
Description:
AbstractThe industrially important cyanides are hydrogen, sodium, potassium, and calcium cyanides.
Hydrogen cyanide is the most used.
It is manufactured by the Andrussow process.
Hydrogen cyanide is classified as a Class A Flammable Poison by the U.
S DOT.
All of the cyanides are poisonous.
Uses of HCN include the production of acetone cyanohydrin for acrylic plastics, adiponitrile for nylon, sodium cyanide for gold recovery, methionine for animal feed, cyanuric chloride for pesticides and for chelating agents.
Sodium cyanide is widely used in the recovery of gold.
The high price of gold has caused a great increase in the demand for sodium cyanide.
There is environmental concern in regard to the use of NaCN in gold recovery and pressure to prohibit its use is mounting.
KCN is used for electrolytic refining of platinum, fine silver plating, separation of gold, silver, and copper from platinum, and for metal coloring.
Other cyanides discussed are lithium, rubidium, cesium, ammonium, and other alkali metal compounds.
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