BY R. TRUJILLO AND E. TEJERA RECEIVED SEPTEMBER 12, 1952 Continuing our studies in connection with ternary systems involving alkali vanadates, l we here report the solubility relations in the system sodium vanadate-sodium sulfate-water at 25'. The sodium vanadate was recrystallized from BDH “Laboratory Reagent” material. It was analyzed as follows: vanadium was determined by potentiometric titration with Mohr's salt in presence ...