in water

in neat (no solvent) byproducts: H2O; dehydration in vac.;;

in neat (no solvent) byproducts: N2, SO2; decompn. over 170°C;;

hydrogen in neat (no solvent) byproducts: Ca(OH)2; Electric Arc; 6 h electric discharge by pressence of H2;;

hydrogen in melt passing H2 over Ca(SCN)2 over 600°C for 2 h by partial melt; formation of thick, white vapor, which is not absorbed in H2SO4 or NaOH solns., but partially soluble in ethanol;; high amt. of Ca(SCN)2 in residue;;