A new MHPOBC analogue displaying ferroelectric and antiferroelectric properties has been studied by complementary methods. The dielectric measurements have been performed on a gold coated cell having thickness of 23 mum. In the antiferroelectric SmCA* phase two dielectric processes have been observed, Both these processes show Arrhenius type behaviour. Reversal current method has been applied to study temperature dependence of two polarization current peaks in the anti ferroelectric phase. Temperature dependence of the spontaneous polarization in the ferroelectric and antiferroelectric phases has been studied and discussed in terms of the mean-field model.