Accession Number:

AD1031806

Title:

Vapor Pressure Data and Analysis for Selected Organophosphorus Compounds: DIBMP, DCMP, IMMP, IMPA, EMPA, and MPFA

Descriptive Note:

Technical Report,01 Dec 2015,01 Oct 2016

Corporate Author:

Edgewood Chemical Biological Center (ECBC) Aberdeen Proving Ground (APG)

Personal Author(s):

• Brozena,Ann
• Buchanan,James H.
• Abercrombie-Thomas,Patrice L.
• Sumpter,Kenneth B.
• Williams,Barry R.
• Tevault,David E.

Report Date:

2017-04-01

Pagination or Media Count:

42.0

Abstract:

Recent work from our laboratory has focused on chemical warfare agents CWAs, simulants, precursors, and degradation products. This report documents the vapor pressure data for three organophosphonate ester compounds and three phosphonic acids, all of which are related to CWAs. Due to structural similarities, these materials may also be considered to be CWA simulants and can be used to evaluate the performance of defensive equipment, which requires accurate knowledge of the thermophysical properties of these materials. Vapor pressure data were measured using two ASTM International methods that are based on differential scanning calorimetry DSC and vapor saturation. The data presented herein have been used to determine temperature-pressure correlations, and the fit constants have been used to determine temperature-dependent thermodynamic properties and to enable interpolation and limited extrapolation of the data. The criteria for assessing vapor pressure data quality are presented herein.

Descriptors:

• chemical warfare agents
• organophosphorus compounds
• vapor pressure
• pressure measurement
• HEAT OF VAPORIZATION
• Volatility
• Boiling point
• PHOSPHONIC ACIDS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE