Muon radiative energy loss (in 1.0E06 cm^2/g) in butane (C%4#H%10#) with Z/A = 0.59497 (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 0.2191 0.0928 0.4841 0.7961 5. 0.2977 0.2326 0.5114 1.0417 10. 0.3637 0.3582 0.4951 1.2170 20. 0.4340 0.4954 0.4714 1.4008 50. 0.5311 0.6879 0.4454 1.6645 100. 0.6050 0.8249 0.4327 1.8626 200. 0.6745 0.9518 0.4261 2.0525 500. 0.7581 1.0855 0.4250 2.2688 1000. 0.8126 1.1685 0.4317 2.4128 2000. 0.8582 1.2279 0.4435 2.5294 5000. 0.9046 1.2807 0.4653 2.6507 10000. 0.9298 1.3057 0.4876 2.7230 20000. 0.9478 1.3214 0.5139 2.7831 50000. 0.9637 1.3336 0.5550 2.8522 100000. 0.9707 1.3386 0.5905 2.8999