Re: Why does 1-propanol have a lower boiling point than methanol or ethanol?

Your information appears to be in error. My copy of the CRC Handbook of 
Chemistry and Physics (61st Edition) gives the following boiling points:

Methanol:    65
Ethanol:     78.5
1-Propanol:  97.5

It does indeed go as molecular mass, as long as there is only one alcohol 
group; compare 1-butanol (b.p. 117) and ethylene glycol (b.p. 198).

                                     Dan Berger
                                     MadSci Administrator