Thermophysical properties of hydrazine-substituted aqueous solutions under various temperatures and pressures
Mahmadali M Safarov, Mohira A Zaripova, Fahriddin S Radjabov, Valamat S Davlatova
The results of experimental research on the thermophysical properties (heat conductivity, density, heat capacity, and viscosity) of hydrazine-substituted aqueous solutions (hydrazine, phenylhydrazine, aerozine, and dimethylhydrazine) in the temperature range 293 – 561 K, and pressure range 0.101 – 98.1 MPa, with concentration 0.1 – 0.9 mol H2O, are presented. A generalised equation which can help in the calculation of the thermophysical properties of hydrazine-substituted aqueous solutions has been developed. The common relative errors of measurement in heat conductivity, density, heat capacity, and viscosity under a coefficient of confidence, α, of 0.95 are respectively 4.2 : 0.1 : 3.0 and 2.6%.