  The isospin properties of primary and secondary fragments produced in
multifragmentation of Fe + Ni and Fe + Fe systems with respect to Ni + Ni
system are analyzed within the statistical multifragmentation model framework.
The reduced neutron and proton densities show an asymmetry in the primary
fragments, that is lessened after secondary decay. with increasing isospin
(N/Z) this effect increases, while the sensitivity of fragment isospin towards
excitation energy and N/Z of the primary fragments remains unchanged.
