Energy, enthalpy, entropy, Helmholtz energy and Gibbs energy for a mixture containing 49. 27 mol% H//2S and 50. 73 mol% CH//4 are presented for data ranges of 300 less than equivalent to degree K less than equivalent to 500 (80 less than equivalent to degree F less than equivalent to 440) and 0 less than equivalent to MPa less than equivalent to 33 (0 less than equivalent to psia less than equivalent to 5000). This work is derived solely from experimental data collected on the system.