What is potassium gold cyanide?

It is widely used in decorative gold-plated products. It is suitable for gold-plating on luxury watches, exquisite gifts and various jewelry. The direct gold-plating effect on stainless steel is excellent, and it can also be used in medical anti-corrosion. Potassium gold cyanide KAu(CN)4 is a reagent for gold plating, mainly used for gold plating in acidic range and gold plating of gold alloys. It is widely used in decorative gold-plated products. It is suitable for gold-plating on luxury watches, exquisite gifts and various jewelry. The direct gold-plating effect on stainless steel is excellent, and it can also be used in medical anti-corrosion. It is a highly toxic substance with a lethal dose of 0.02mg for adults. Production principle of gold potassium cyanide: There are three main methods for producing gold potassium cyanide: electrolysis method, gold fulminate method, and direct cyanide method. The principle of electrolytic production of gold potassium cyanide is similar to the production of silver potassium cyanide. The anode gold is dissolved into the electrolyte through the action of electric current, and combined with the cyanide in the electrolyte to obtain KAu(CN)2. The diaphragm electrolysis developed in recent years The method and controlled potential electrolysis method have been used to a certain extent in the production of potassium gold cyanide. The gold fulminate method uses pure gold, aqua regia, ammonia and potassium cyanide as raw materials to prepare potassium gold cyanide. The specific production process is pickling gold - dissolving gold in aqua regia - concentrating and driving out nitrate - dilution, ammonia precipitation - Cyanide dissolution - filtration and impurity removal - evaporation and concentration.