Naphthenic acids rare earth salts rare earth naphthenates YTTRIUM (III) NAPHTHENATE, ~60% IN TOLUENE (7-13% Y) (99.9%-Y) (REO) SAMARIUM (III) NAPHTHENATE (12-15% SM) 7-13%Y,60%w/wintoluene Samarium(III)naphthenate(8-10%Sm) YTTRIUM(III) NAPHTHENATE: CA. 60% IN TOLUENE (7-13% Y) Yttrium naphthenate, Y 7-13%, 60% w/w in toluene