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Waterstofcyanide · Cyjanowodór · Cianeto de hidrogénio · Acid cianhidric · Синильная кислота · Цијановодонична киселина · Синильна кислота · Sianid · 氰化氢 · Cyanure d'hydrogène · מימן ציאנידי · हाइड्रोजन सायनाइड
| CAS | 74-90-8 |
|---|---|
| EC | 200-821-6 |
| UN | 1051 |
| Formül | HCN |
| Mol kütlesi | 27,025 g/mol |
| APS (LEL) | 5,4 % vol |
| ÜPS (UEL) | 46,0 % vol |
| Parlama noktası | -20 °C |
| Kendiliğinden tutuşma sıcaklığı | 538 °C |
| Sıcaklık sınıfı | T1 |
| Gaz grubu | IIB |
| Gazın veya buharın bağıl yoğunluğu (hava = 1) | 0,933 |
| GHS | Tehlike · H224, H330, H400, H410 |
Hydrogen cyanide is a one-carbon compound consisting of a methine group triple bonded to a nitrogen atom. It has a role as a poison, an Escherichia coli metabolite and a human metabolite. Hydrocyanic acid, aqueous solution, with not more than 20% hydrogen cyanide is a clear colorless aqueous solution of a gas. Has a faint odor of almonds. Can evolve hydrogen cyanide gas, which is (barely) lighter than air.