abstract |
Oxamide is prepared by hydrolyzing dicyan in an aqueous solution containing as catalyst (a) one or more molybdates and/or tungstates, (b) at least one metal ion selected from the group consisting of zinc, copper, nickel, cobalt, iron and manganese ions, and, if further required, (c) one or more citrates and/or malates, at a temperature of from 0* to 90*C and pH of from 1 to 6.5. |