Hydrocyanic Acid, Prussic Acid

Hydrocyanic acid, also known as Cyanide acid, is an extremely poisonous volatile acid. Inhalation of its vapors can cause death within one minute. It gets its name from the bluish tint of color it acquires when reacting with water or moisture in the air.

Hydrocyanic acid has a characteristic odor of bitter almonds, which can be noticed at low concentrations. However, at higher concentrations, the odor may only be noticeable for a few seconds before it leads to respiratory paralysis and cardiac arrest.

Cyanide, which is formed when hydrocyanic acid reacts with metals such as potassium or sodium, is also poisonous. It can cause similar symptoms of poisoning as hydrocyanic acid.

Hydrocyanic acid was widely used in the past as a poisonous gas during military conflicts. It is currently used in industrial applications such as plastics, textiles and pharmaceuticals.

Hydrocyanic acid is one of the most poisonous substances available to humans, and its use should be limited and regulated by special rules and safety measures. Operations involving hydrocyanic acid should only be carried out under the appropriate supervision and control of qualified personnel.



Hydrocyanic acid is a chemical compound consisting of nitrogen and hydrogen in a 3:1 ratio. It is one of the most poisonous compounds on the planet and can cause death if inhaled within minutes. For this reason, it is also known as hydrocyanic gas or cyanide gas.

Hydrocyanic acid belongs to the group of halide acids, which