Sodium deuteroxide or deuterated sodium hydroxide is a chemical compound with the formula NaOD or NaO2H. IUPAC recommends that the symbol for deuterium should be 2H, although most chemists use the term NaOD. It is a white solid very similar to sodium hydroxide, of which it is an isotopologue. It is used as a strong base and deuterium source in the production of other deuterated compounds. For example, reaction with chloral hydrate gives deuterated chloroform, and reaction with N-nitrosodimethylamine gives the deuterated analog of that compound. Sodium deuteroxide is an ionic compound, consisting of sodium cations Na+ and deuteroxide anions −OD (or −O2H).
