Daylight Hours: 9 hours, 11 minutes (-8m 42s). The Sun's altitude in Tromsoe tromsÃ¸. Today the horizontal line signifies the, horizon the vertical lines show the times of sunrise and. Sunset altitude and heading are displayed in the box on the. right
Hydrogen cyanide (HCN), sometimes called prussic acid, is an organic compound with the chemical formula HCN. It is a colorless, extremely poisonous and flammable liquid that boils slightly above room temperature, at 25.6 Â°C (78.1 Â°F).
Hydrogen Cyanide. Hydrogen cyanide, HCN, is a colourless gas that smells slightly of almonds (although a small proportion of people, about 1 in 10, cannot smell it at all due to a genetic trait). It is extremely poisonous, because it binds irreversibly to the iron atom in hemoglobin, making it unavailable to transport the vital O2 to the body's cells and tissues.