Density of molten sulfur in the 334–508 K range

As the density of elemental sulfur was determined on slowly cooling from 508 K, it was unexpected for the metastable molten state to be maintained to temperatures as low as 334 K, thus expanding by about 20 K the T-range within which experimental data become available. In the 334–430 K range, the density ρ of the metastable molecular melt was fitted to ρ (g cm−3) = 2.18835–0.00098187T (K), subsequently leading to volumic expansion coefficients αV(T) = −(1/ρ(T))(∂ρ/∂T)P of 5.28 × 10−4 K−1 at 334 K and 5.56 × 10−4 K−1 at 430 K.