Potassium cyanide is highly toxic. Potassium cyanide is an inorganic compound with the appearance of white spherical hard block, granular or crystalline powder. Potassium cyanide is easily soluble in water, ethanol and glycerol, slightly soluble in methanol and sodium hydroxide aqueous solution. The aqueous solution is strongly alkaline and hydrolyzes quickly. Potassium cyanide the density of potassium cyanide is 1.857g/cm3, the boiling point is 1625 ℃ and the melting point is 634 ℃. Potassium cyanide can be poisoned to death if it contacts the skin wound or inhales a trace of powder.
Potassium cyanide can be used in various experiments and also in refining gold and silver minerals. Because it is highly toxic, it must be used carefully.
Potassium cyanide and sodium cyanide have the same purpose and can be used in general. Compared with sodium cyanide, potassium cyanide has the advantages of high conductivity and fine coating, so it is more suitable for use. （QingHuaJiaShiJuDuMa）