Measurements of the Vapor Pressure of Liquid Hydrazine above Its Normal Boiling Point
Aerospace Corporation El Segundo United States
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The vapor pressure of liquid hydrazine was measured directly over the temperature range of 324 to 414 K by using a small-scale vapor pressure chamber. These are the first direct measurements since the 19thcentury of hydrazines vapor pressure above its normal boiling point. The current results are compared to previous measurements in the literature, previously published vapor pressure correlation functions, and those predicted by previously published equations of state for hydrazine. The current measurements agree well with most previously published experimental values and previously published hydrazine correlation functions. A new correlation function was fit to current data, previous published experimental values, and vapor pressure values suggested by a previously published Peng-Robinson equation of state analysis that focused on fugacity.
- Organic Chemistry