Muon radiative energy loss (in 1.0E06 cm^2/g) in thallium (Tl) with Z = 81, A = 204.38(2) (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.9262 0.4193 0.3634 2.7089 5. 2.6723 1.9163 0.3880 4.9766 10. 3.2814 3.0788 0.3804 6.7406 20. 3.9065 4.1577 0.3669 8.4311 50. 4.7242 5.8023 0.3518 10.8783 100. 5.3054 6.8879 0.3447 12.5380 200. 5.8355 7.8500 0.3413 14.0269 500. 6.4300 8.7309 0.3415 15.5024 1000. 6.7876 9.1972 0.3468 16.3316 2000. 7.0654 9.5328 0.3552 16.9534 5000. 7.3228 9.8140 0.3704 17.5072 10000. 7.4500 9.9431 0.3855 17.7787 20000. 7.5342 10.0280 0.4031 17.9653 50000. 7.6038 10.0909 0.4305 18.1252 100000. 7.6347 10.1171 0.4540 18.2058