Abstract:
A bath for the electrodeposition of bright tin-lead alloys which comprises an aqueous acidic bath containing at least one soluble tin compound and one soluble lead compound to which there has been added: A. a lower alkylene oxide condensation product, and B. an effective amount of at least one pyridine or quinoline compound having the structure ##STR1## wherein the substituents R. sub. 1, R. sub. 2, R. sub. 3, R. sub. 4 and R. sub. 5 each is a hydrogen or halogen atom, a lower alkyl radical containing a hydroxyl group, an alkenyl radical, the radical (C. sub. n H. sub. 2n --CO. sub. 2 H in which n has a value from 0 to 6 or a carbamide radical or R. sub. 4 and R. sub. 5 combined form a divalent radical to provide a compound having the structure ##STR2## in which R. sub. 6 is nothing or a hydroxyl radical; Z is nothing, 0. sup.