Deutero methane is obtained by the deuterolysis of

The addition of deuterated water (D₂O) in the form of D⁺ OD^- to a compound is called Deuterolysis.

${\mathrm{Mg}}_3{\mathrm{N}}_2 +6{\mathrm{D}}_2\mathrm{O} \to 3\mathrm{Mg}{\left(\mathrm{OD}\right)}_2 +2{\mathrm{ND}}_3$

${\mathrm{CaC}}_{2 }+2{\mathrm{D}}_2\mathrm{O}\to \mathrm{Ca}{\left(\mathrm{OD}\right)}_2 + {\mathrm{C}}_2{\mathrm{D}}_2$

${\mathrm{Al}}_4{\mathrm{C}}_3 + 12{\mathrm{D}}_2\mathrm{O} \to 4\mathrm{Al}{\left(\mathrm{OD}\right)}_3 + 3{\mathrm{CD}}_4$

${\mathrm{Ca}}_3{\mathrm{P}}_2 + 6{\mathrm{D}}_2\mathrm{O} \to 3\mathrm{Ca}{\left(\mathrm{OD}\right)}_2 + 2{\mathrm{PD}}_3$