Specific heats of gaseous 1,3-butadiene, isobutene, styrene, and ethylbenzene

This paper describes a flow calorimeter and measurements of the specific heats of four hydrocarbons that are of interest in connection with synthetic rubber. The measurements on gaseous 1,3-butadiene and isobutene cover the range -35 0 to +80 0 C. The specific heats of styrene vapor and ethylbenzene vapor were determined at 100 0 C. The calorimeter was tested by measuring the specific heat of normal hydrogen. The results on the hydrocarbons are believed to be correct to 0.5 percent.