760.    DURAND, J. F.  [Double Decomposition of Metallic Acetylides and Salts in an Aqueous Medium.]  Compt. Rend., vol. 177, 1923, pp. 693-695; Chem. Abs., vol. 18, 1924, p. 657.

     CaC2, when added to aqueous solutions of salts, precipitates acetylides, which can be purified by washing with dilute HOAc.  Thus, with CuCl2, CuC2; with NiCl2, NiC2; with MnCl2, MnC2; Fe2, FeC2.