On our CodyCross answers based website we have the solution for __ sulphate, was used as rat poison, symbol Tl. CodyCross game includes different missions and events which update daily so you can earn tokens that are mostly needed to help with answers for challenging clues. Now let's focus on the answer you need for __ sulphate, was used as rat poison, symbol Tl by scrolling down which is part of CodyCross Astrology Group Puzzle 8.