87.20 85.63 87.14 85.63 12.80 14.37 12.84 14.40* Determined by the geometrical construction method of WJ Taylor and FD Rossini, J. Research Natl. Bur. Standards, 32, 197 (1944). By assuming that for 2-cyclopropyl-3-methyl-1-butene the depression in the me1 tirig point per mole impurity is between 0.2 and 0.3"(see footnote 12, reference l), the purity of the hydrucarbon is better than 99.5 mole%.
