[en] From our previous measurements of P, V, T, and ultrasonic velocity u made on fluid n-H2 and n-D2 in the region 75< T<300 K and 2< P<20 kbar, we extrapolated values of V, u (P, T) for the radioactive isotope T2 by applying several scaling laws corrected for quantum effects. The data were used in a double-process least-squares fit to evaluate the parameters in a Benedict-type equation of state from which thermodynamic properties were derived