The possible role of hydrogen cyanide in chemical evolution

Abstract

The possible role of hydrogen cyanide in chemical evolution was investigated. Aqueous solutions of hydrogen cyanide (0.1 M) were prepared and adjusted to pH 9.2 with ammonium hydroxide. These solutions were stored in the dark for at least one year, during which time the solutions turned darker and a black precipitate formed. A fraction containing acidic components was used in further studies of "HCN oligomers."