Muon radiative energy loss (in 1.0E06 cm^2/g) in naphtalene (C%10#H%8#) with Z/A = 0.53053 (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 0.2338 0.1005 0.4753 0.8097 5. 0.3172 0.2497 0.5023 1.0692 10. 0.3864 0.3806 0.4869 1.2540 20. 0.4599 0.5238 0.4641 1.4478 50. 0.5605 0.7248 0.4394 1.7247 100. 0.6367 0.8678 0.4272 1.9317 200. 0.7079 1.0001 0.4211 2.1290 500. 0.7933 1.1378 0.4200 2.3512 1000. 0.8485 1.2229 0.4269 2.4983 2000. 0.8944 1.2833 0.4385 2.6161 5000. 0.9405 1.3368 0.4600 2.7374 10000. 0.9653 1.3621 0.4818 2.8092 20000. 0.9827 1.3780 0.5074 2.8682 50000. 0.9978 1.3906 0.5476 2.9359 100000. 1.0044 1.3957 0.5821 2.9822