Note 36 — Chapter IX · COMPOUNDS OF CARBON WITH OXYGEN AND NITROGEN

Naumann determined the following dissociation tensions of the vapour of ammonium carbamate (in millimetres of mercury):—

-10° 0° +10° 20° 30° 40° 50° 60°

5 12 30 62 124 248 470 770

Horstmann and Isambert studied the tensions corresponding to excess of NH₃ or CO₂, and found, as might have been expected, that with such excess the mass of the salt formed (in a solid state) increases and the decomposition (transition into vapour) decreases.