Isotopes of titanium

Isotopes of titanium (₂₂Ti)

Main isotopes Decay Isotope abun­dance half-life (t1/2) mode pro­duct 44Ti synth 59.1 y ε 44Sc 45Ti synth 3.08 h β+ 45Sc 46Ti 8.25% stable 47Ti 7.44% stable 48Ti 73.7% stable 49Ti 5.41% stable 50Ti 5.18% stable
Standard atomic weight Ar°(Ti)
	47.867±0.001 47.867±0.001 (abridged)

Naturally occurring titanium (₂₂Ti) is composed of five stable isotopes; ⁴⁶Ti, ⁴⁷Ti, ⁴⁸Ti, ⁴⁹Ti and ⁵⁰Ti with ⁴⁸Ti being the most abundant (73.8% natural abundance). Twenty-three radioisotopes have been characterized, with the most stable being ⁴⁴Ti with a half-life of 59.1 years and ⁴⁵Ti with a half-life of 184.8 minutes. All of the remaining radioactive isotopes have half-lives that are less than 10 minutes, and the majority of these have half-lives that are less than one second.

The isotopes of titanium range from ³⁹Ti to ⁶⁶Ti. The primary decay mode for isotopes lighter than the stable isotopes is β⁺ and the primary mode for the heavier ones is β⁻; the decay products are respectively scandium isotopes and vanadium isotopes.

There are two stable isotopes of titanium with an odd number of nucleons, ⁴⁷Ti and ⁴⁹Ti, which thus have non-zero nuclear spin of 5/2− and 7/2− (respectively) and are NMR-active.