NDLI: Thermal Analysis Studies on Isopropylnitrate

Content Provider	Springer Nature Link
Author	Jones, D. E. G. Feng, H. T. Augsten, R. A. Fouchard, R. C.
Copyright Year	1999
Abstract	Isopropylnitrate (IPN) is described as a detonable material used in propellants and explosives. While there is considerable information available on its sensitivity and compatibility with other materials, very little is known about its thermochemical properties. This paper will describe the results obtained from some DSC, heat flux calorimetry (HFC) and accelerating rate calorimetry (ARC) measurements.The ASTM DSC method using a hermetic aluminum pan having a lid with a laser-produced pin hole was used to determine the vapour pressure of IPN$_{1}$. Results calculated from an Antoine equation are in substantial agreement with those determined from DSC measurements. From the latter measurements, the enthalpy of vaporization was determined to be 35.32±0.62 kJ mol$^{−1}$. Attempts to determine vapour pressures above about 0.8 MPa resulted in significant decomposition of IPN$_{g}$.The enthalpy change for decomposition in sealed glass systems was found to be -3.43±0.09 kJ g$^{−1}$ and -3.85±0.03 kJ g$^{−1}$, respectively from DSC and HFC measurements on IPN$_{1}$ samples loaded in air. Slightly larger exotherms were observed for the HFC results in air than those in inert gas, suggesting some oxidation occurs. In contrast, no significant difference in the observed onset temperature of about 150°C was observed for both the HFC and ARC results.From DSC measurements, an Arrhenius activation energy for decomposition of 126±4 kJ mol$^{−1}$ was found. These measurements were also conducted in sealed glass systems and decomposition appeared to proceed primarily from the liquid phase.
Starting Page	9
Ending Page	19
Page Count	11
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	55
Issue Number	1
e-ISSN	15728943
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic Chemistry Physical Chemistry Polymer Sciences Measurement Science, Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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