Abstract
The density for mixtures of ethylenediamine (EDA) and water at 0.2 MPa was measured with a vibrating tube densitometer in the temperature range of 283 K to 353 K at intervals of 10 K. The entire composition range was covered with intervals of molar fractions of 10 %. The excess volume has a minimum at a molar fraction of water of 59 %, corresponding to a maximum at 69 % in the departure from additivity in density. The variation with temperature in excess volume is small, but for density it is complex. The temperature dependence in density is well described by combining a Redlich-Kister model for excess volume without temperature dependent parameters with models for the pure component densities.
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