N. Karger et al., DENSITY OF LIQUID-HYDROGEN FLUORIDE BETWEEN 258 K AND 373 K AT PRESSURES UP TO 200 MPA, Journal of chemical and engineering data, 43(6), 1998, pp. 931-934
Densities of pure liquid hydrogen fluoride were measured in a piston-c
ylinder type densimeter. The HF was contained in a bellow made of tetr
afluormethylene, which was surrounded by methanol. This arrangement al
lowed measurements to be performed over a temperature range from 258 K
to 373 K, at pressures up to 200 MPa. The results could be well-descr
ibed by the Tait equation, where both fit parameters show a systematic
temperature dependence. When compared to other simple liquids, HF sho
ws an unusually high compressibility over the whole temperature and pr
essure range studied.