The free acid, which is obtained by treating the salts with acids, is an oily liquid smelling like prussic acid; it is very explosive, and the vapour is poisonous to about the same degree as that of prussic acid.
The following poisons may not be sold, either retail or wholesale, unless distinctly labelled with the name of the article, and the word poison, with the name and address of the seller: Almonds, essential oil of (unless deprived of prussic acid).
The breathing becomes shallow, the drug killing, like nearly all neurotic poisons (alcohol, morphia, prussic acid, &c.), by paralysis of the respiratory centre, and the patient dying in a state of coma.
The first three will he treated here; for the others see Prussic Acid and Cyanamide.
CYANIDE, in chemistry, a salt of prussic or hydrocyanic acid, the name being more usually restricted to inorganic salts, i.e.