Titanium-46

Main isotopes of titanium

Iso­tope Decay abun­dance half-life (t1/2) mode pro­duct 44Ti syn 63 y ε 44Sc γ – 46Ti 8.25% stable 47Ti 7.44% stable 48Ti 73.72% stable 49Ti 5.41% stable 50Ti 5.18% stable
Standard atomic weight (Ar, standard)	47.867(1)

Naturally occurring titanium (₂₂Ti) is composed of 5 stable isotopes; ⁴⁶Ti, ⁴⁷Ti, ⁴⁸Ti, ⁴⁹Ti and ⁵⁰Ti with ⁴⁸Ti being the most abundant (73.8% natural abundance). Twenty-one radioisotopes have been characterized, with the most stable being ⁴⁴Ti with a half-life of 60 years, ⁴⁵Ti with a half-life of 184.8 minutes, ⁵¹Ti with a half-life of 5.76 minutes, and ⁵²Ti with a half-life of 1.7 minutes. All of the remaining radioactive isotopes have half-lives that are less than 33 seconds and the majority of these have half-lives that are less than half a second. The least stable is ⁶¹Ti with a half-life somewhat longer than 300 nanoseconds.

The isotopes of titanium range in atomic mass from 38.01 u (³⁸Ti) to 62.99 u (⁶³Ti). The primary decay mode before the most abundant stable isotope, ⁴⁸Ti, is β⁺ and the primary mode after is β⁻. The primary decay products before ⁴⁸Ti are scandium isotopes and the primary products after are vanadium isotopes.

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