An interaction between Synroc-C samples prepared by inductive melting in a
cold crucible and deionized water was investigated at room temperature, 100
and 200 °C. The leachability of powdered specimens with grainsize 0.10–0.15
mm was determined by repeated static tests with regular replacement of
leachant. The experimental data showed that the most leachable elements are
the alkali, alkaline earths and molybdenum. The matrix elements such as
titanium, zirconium, and rare earths as well are very leach resistant.
Comparison of the calculated leach rates of components with reference data
on leaching of alternative materials showed that cesium leachability from
the studied specimens are close to borosilicate glass, but leaching behavior
of other components is comparable to leachability from Synroc-C prepared by
hot-pressing.