Abstract: A process is provided for the electrodeposition of alloys of tin and lead by passing electrical current through an anode, an aqueous acidic plating solution and a cathode, wherein the aqueous acidic plating bath includes at least one organic compound having a formula ##STR1## wherein X=O, S, or NH and R.sub.2 and R.sub.3 are H, or lower alkyl and R.sub.1 is ##STR2## .

Abstract: A new acetylenic composition, 3-(2-propynoxy)-2-propenoic acid, and its methods of preparation are described. Also, acetylenic compositions are described which are prepared by the process which comprises the steps of(a) reacting propargyl alcohol with an alkali metal permanganate in an aqueous alkaline solution,(b) filtering the reaction mixture, and(c) acidifying the filtrate with acid.The acetylenic compositions prepared in this manner are useful in aqueous acidic plating baths for the electrodeposition of a bright nickel or nickel-iron alloy on a substrate. Methods for the electrodeposition of nickel and nickel-iron alloys from such baths as well as additive compositions for forming the baths are described.

Abstract: Bright level metal deposits can be obtained on substrates from aqueous acid plating baths containing water soluble salts of the metal to be deposited and at least one surfactant of the formulaROCH.sub.2 CH(CH.sub.3)OCH.sub.2 CH(CH.sub.3)N(H)CH.sub.2 CH.sub.2 COOH (I)or ##STR1## wherein R is an alkyl group containing 10 to 12 carbon atoms; x and y are integers, the sum of which is from 2 to about 20. The aqueous acid plating baths of the invention will preferably contain as a brightening agent, at least one carbonyl-containing compound. These plating baths exhibit low foaming characteristics.