Lead Tartrate, PbC₄H₄O₆

Lead Tartrate, PbC₄H₄O₆, is a crystalline powder, obtained by precipitating a lead salt with tartaric acid. It is slightly soluble in water and less soluble in alcohol, as the following figures show:

	Water		Alcohol
	18° C	25° C	18° C	25° C
Grams PbC4H4O6 in 100 grams solvent	0.0100	0.0108	0.0028	0.0032

Lead tartrate dissolves in tartaric acid, in alkalis and ammonium salts, with the formation of complex ions. Lead oxide also, like copper oxide and other metallic oxides, dissolves in alkali tartrate solution, producing an alkali salt of plumbotartaric acid, to whose ion the following constitution is attributed: