Accession Number : ADA562293


Title :   Vapor-Phase Infrared Spectral Study of Weapons-Grade O-Ethyl S-2(diisopropylamino)ethyl methylphosphonothiolate (VX)


Descriptive Note : Final rept. Feb-Mar 2009


Corporate Author : SCIENCE APPLICATIONS INTERNATIONAL CORP GUNPOWDER MD


Personal Author(s) : Williams, Barry R ; Hulet, Melissa S ; Samuels, Alan C ; Miles, Jr, Ronald W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a562293.pdf


Report Date : May 2012


Pagination or Media Count : 45


Abstract : We report the infrared spectra of weapons-grade 0-ethyl-S-2-(diisopropylamino)ethyl methylphosphonothiolate in the mid-infrared (4000-550/cm) region. The chemical used in the feedstock was obtained from a ton container and was analyzed by gas chromatography-mass spectrometry and nuclear magnetic resonance spectroscopy to determine its composition. Analysis of the data showed that the spectra were dominated by the volatile impurities in the VX, which were primarily acetone, 1,3-diisopropylcarbodiimide, and diisopropylamine. Concentrations of the compounds observed in the vapor were similar to the predictions made using Raoult's law. The availability of the absorptivity coefficients of most of the compounds found in the effluent enabled us to calculate a mass balance.


Descriptors :   *VX AGENT , ABSORPTION COEFFICIENTS , INFRARED SPECTRA , VAPOR PRESSURE


Subject Categories : Organic Chemistry
      Chemical, Biological and Radiological Warfare


Distribution Statement : APPROVED FOR PUBLIC RELEASE