χάλκανθον
From LSJ
Ὡς πάντα τιμῆς ἐστι πλὴν τρόπου κακοῦ → Ut cuncta nunc sunt cara, nisi mores mali → Charakterlosigkeit allein bleibt ohne Ehr
English (LSJ)
τό,
A solution of blue vitriol (copper sulphate), used for ink and for shoemaker's blacking, Dsc.3.80, Orph.A.960, Plin.HN34.123. II = χρυσάνθεμον, Ps.-Dsc.4.58.