Reply to the 'Comment on "A new equation of state based on Grover, Gettingand Kennedy's empirical relation between volume and bulk modulus. The high-pressure thermodynamics of MgO" ' by S. Raju, E. Mohandas and K. Sivasubramanian, Phys. Chem. Chem. Phys., 2001, 3, 1391

The Comment of Raju et al. brings out certain interesting features of our r ecently developed equation of state. In an elegant way they derive simple e xpressions for the Anderson-Gruneisen parameter and the thermal expansivity as a function of volume. Their results are a useful extension of the theor y we have presented in our previous paper. However, we wish to take the opp ortunity to set right a number of their deductions. In particular we would like to comment on (i) the use of the Anderson-Gruneisen parameter; (ii) th e constancy of the property alphaK; and (iii) the plot of volume against ln (alpha/alpha (0)).