Nitric esters boiling points

It is of some interest to apply Trouton s rule (entropy of vaporization at the boiling point is a constant) to the above data. Unfortunately, boiling points are known only for nitric acid and some of the aliphatic nitrates. Their Trouton constants (AH p/Tbp) are 20.2 and ca 22.8 entropy units, respectively. Thus they straddle the normal Trouton constant of 21 eu. This observation, coupled with the observed constancy of the specific heat of vaporization, suggests that intermolecular bonding in nitrate esters may be relatively weak, or at least consistent... 

The inositols are very stable compounds. They will withstand the action of alkaUs and acids, even of boiling hydriodic acid, of reducing agents, and of heat up to about 250°. They are all crystalline solids with melting points over 200°. Concentrated nitric acid will attack them only at an elevated temperature. Hexa-esters are readily formed. 

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