Effect of Unsaturation, Cyclization and Isotopic Substitution on Critical Demixing Temperatures

The demixing curves in binary systems of nitromethane with 11 1-alkenes, 6 cycloalkanes and 2 cycloalkenes, and of CD8COCD3 with 5 n.alkanes were measured. Critical demixing temperatures: a) are additively affected by unsaturation and cyclization in the first group of systems; b) are increased by a constant amount in the second group, in comparison to the corresponding systems containing CH3COCH3