Tim, I've got different data for Sodium Chloride, but I'm not sure it's at Standard Pressure.
http://ptcl.chem.ox.ac.uk/MSDS/SO/sodium_chloride.html
Melting Point = 804 C (=1077K) Boiling Point = 1413 C (=1686K)
OK (der) you haven't put it in the table yet. Sorry. - User:Mark Ryan