Chronopotentiometric measurements, using an impermeable vitreous C electrode, were performed. It was found that the diffusion coefficient at 580C was equal to 3.5 x 10-4 cm2/s. Solutions of Halogens in Molten Halides. J.D.Van Norman, R.J.Tivers: BNL Report 12810, 1968

Figure 29

Diffusion of 36Cl in RbCl