Ustilago, and filling a greenhouse with hydrocyanic acid gas when young insects are commencing their ravages, e.g.
Carbolic acid is distinguished from all other acids so-called - except oxalic acid and hydrocyanic acid - in that it is a neurotic poison, having a marked action directly upon the nervous system.
This compound combines with hydrocyanic acid to form a nitrile which hydrolyses to dichlorhydroxy iso-butyric acid.
From this he infers that cyanogen is C: N N :C and not N; C C; N, that hydrocyanic acid is HC N, and acetonitrile CH 3 C; N.
Glucoseoxime on warming with acetic anhydride is simultaneously acetylated and dehydrated, yielding an acetylated gluconitrile, which when warmed with ammoniacal silver nitrate loses hydrocyanic acid and is transformed into an acetyl pentose.