Hazardous Substances
Potassium Cyanide (KCN)
Street names: KCN, Cyanide salts
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- NONE — this is not a recreational drug. Blocks cellular oxygen use within minutes
⚠Key risks
- Lethal dose ~200–300 mg — death within minutes to an hour
- No antidote available outside hospital; hydrogen cyanide gas from acid contact
✚Overdose signs
- All exposure is poisoning: gasping, seizures, collapse, cardiac arrest
📋Quick facts
Also known asKCN, Cyanide salts
CategoryHazardous Substances
Schedule / classNot a drug — regulated toxic chemical (poisons laws)
AppearanceWhite crystalline salt, almond-like odor when damp
Street priceN/A — sometimes sold fraudulently as 'peaceful exit' scams
Legal statusHeavily regulated toxic chemical; possession without industrial license is a crime in all target regions
Last updated2026-09-12
Sources: WHO, CDC, ATSDR
Category comparison — Hazardous Substances
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Potassium Cyanide (KCN) | Not a drug — regulated toxic chemical | Lethal dose ~200–300 mg — death within minutes to an hour; No antidote available outside hospital; hydrogen cyanide gas from acid contact | N/A — sometimes sold fraudulently as 'peaceful exit' scams |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does Potassium Cyanide (KCN) look like?
White crystalline salt, almond-like odor when damp
What are the signs of a Potassium Cyanide (KCN) overdose?
All exposure is poisoning: gasping, seizures, collapse, cardiac arrest Call emergency services immediately.
How addictive is it?
Lethal dose ~200–300 mg — death within minutes to an hour Dependence can develop with regular use.