The solubility of hydrogen in the cyclic alkylene ester 1,2-butylene carbonate was determined at (283.3, 298.2, and 323.1) K up to a pressure of 9.3 MPa with a high-pressure view-cell technique based on the synthetic method. The solubility of hydrogen in 1,2-butylene carbonate increases with increasing temperature. An extension of Henry's law was employed to correlate the solubility pressures, and the final results for Henry's constant (at zero pressure) of hydrogen in 1,2-butylene carbonate (on the molality scale) are correlated within the experimental uncertainty (about +/- 1.4 %) by ln(k(H,H2)((0))/MPa) = 2.123 + 650.96/(T/K).