Para aminophenylacetic acid and {HEAD ~ 4 aminoantipyrine} can be added to {TAIL ~ the bath} and in the presence of sodium ferrocyanide reduce the rate of oxidation of the bivalent tin ion 
added to
Para aminophenylacetic acid and { HEAD ~ 4 aminoantipyrine } can be added to { TAIL ~ the bath } and in the presence of sodium ferrocyanide reduce the rate of oxidation of the bivalent tin ion
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH