How to calculate the boiling point of a solid substance? Say that I have a solid substance; I know its density, mass, volume, melting point, specific heat, the pressure which it is under, and nothing else. (for now.)

How do I find the heat at which it boils? (So it goes solid -> liquid -> gas)
you can't...it must be found experimentally (it has) P.S Even if you know the BP at 1 atm, you can never calculate the real boiling point at any given BP, you may come close