pittacal
Pit"ta*cal, n. Etym: [Gr. pittacale.] (Chem.) Defn: A dark blue substance obtained from wood tar. It consists of hydrocarbons which when oxidized form the orange-yellow eupittonic compounds, the salts of which are dark blue.
Pit"ta*cal, n. Etym: [Gr. pittacale.] (Chem.) Defn: A dark blue substance obtained from wood tar. It consists of hydrocarbons which when oxidized form the orange-yellow eupittonic compounds, the salts of which are dark blue.