Accession Number:

AD1105293

Title:

Measurements of the Vapor Pressure of Liquid Hydrazine above Its Normal Boiling Point

Descriptive Note:

Technical Report

Corporate Author:

Aerospace Corporation El Segundo United States

Personal Author(s):

• DeSain,John D
• Hsu,Andrea G
• Brady,Brian B

Report Date:

2018-06-19

Pagination or Media Count:

26.0

Abstract:

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.

Descriptors:

• thermodynamic properties
• pressure measurement
• boiling point
• propulsion systems
• hydrazines
• vapor pressure
• boiling
• experimental data

Subject Categories:

• Thermodynamics
• Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE