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.
|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|
|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
|Safety Statements:||S7; S28; S29; S45|
|RIDADR:||UN 1680 6.1/PG 1|
|Risk Statements:||R26/27/28; R32; R50/53|
|Hazard Codes:||T+; N|