potassium cyanide

CAS No.: 151-50-8
Formula: CKN
Exact Mass: 64.96680
Molecular Weight: 65.11570
PSA: 23.79000
LogP: 0.01678
Description Feedback
Potassium cyanide is a compound with the formula KCN. This colorless crystalline salt, similar in appearance to sugar, is highly soluble in water. Most KCN is used in gold mining, organic synthesis, and electroplating. Smaller applications include jewelry for chemical gilding and buffing.
KCN 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 cyanide has been described as acrid with a burning sensation on the tongue. An Indian man who committed suicide left a hastily scrawled note describing the taste of the fatal toxin, the Hindustan Times newspaper reported. "Doctors, potassium cyanide. I have tasted it. It burns the tongue and tastes acrid," he wrote, according to the paper.

Properties Feedback
Appearance & Physical State:white granular powder or crystals
Density:1.00 g/mL at 20 °C
Melting Point:634 °C(lit.)
Boiling Point:1625 °C
Flash Point:1625°C
Stability:Stable. Incompatible with a variety of materials, including acids, iodine, peroxides, permanganates, alkaloids, chloral hydrate, metallic salts. Light and moisture sensitive. Contact with acid generates extremely toxic HCN gas.
Storage Condition:Poison room

Safety Info Feedback
Hazard Class:6.1
Safety Statements:S7; S28; S29; S45
HS Code:2837191000
Packing Group:I
WGK Germany:3
RIDADR:UN 1680 6.1/PG 1
Risk Statements:R26/27/28; R32; R50/53
Hazard Codes:T+; N


Precursor and Product