In two previous investigations On the thermal isomerization of dimethyl maleate, in the gaseous state, have been described. In the temperature range 270 to 380'the reaction is homogeneous and of the quasi-unirnolecular type, the first order constants beginning to drop off at about three atmospheres. The limiting value at infinite pressure is described as k= 6.8 X lo5 e--269500/RT set.-'. The experimental rate was found to be so slow that even the ...
