Abstract
Satisfactory solutions have been obtained for the phase transitions of alkali halides by employing the Born-Mayer model with the recently revised van der Waals coefficients. These new coefficients for the most part eliminate the use of high van der Waals term multiplicants K > 1 as required earlier by Rao and co-workers when Mayer's coefficients were employed; there appears to be need for increased van der Waals terms in the Born-Mayer description of alkali halides.