Collect. Czech. Chem. Commun. 1989, 54, 2951-2961

Measurement of growth rates for single crystals and pressed tablets of CuSO4.5 H2O on a rotating disc

Miloslav Karel and Jaroslav Nývlt

Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences, 160 00 Prague 6


Measured growth and dissolution rates of single crystals and tablets were used to calculate the overall linear rates of growth and dissolution of CuSO4.5 H2O crystals. The growth rate for the tablet is by 20% higher than that calculated for the single crystal. It has been concluded that this difference is due to a preferred orientation of crystal faces on the tablet surface. Calculated diffusion coefficients and thicknesses of the diffusion and hydrodynamic layers in the vicinity of the growing or dissolving crystal are in good agreement with published values.