Accession Number : AD1039341


Title :   Ambient Volatility of Triethyl Phosphate


Descriptive Note : Technical Report,01 Oct 2016,30 Jan 2017


Corporate Author : EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND United States


Personal Author(s) : BUCHANAN,JAMES H ; MAHLE,JAMES J ; TEVAULT,DAVID E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1039341.pdf


Report Date : 01 Aug 2017


Pagination or Media Count : 36


Abstract : Although deviations are common, the effect of humidity on the volatility of materials is predictable using Raoult's law. This report details the measurement of the effect of water vapor partial pressure on the volatility of triethyl phosphate (TEPO), which has been used as a testing surrogate for G-type nerve agents. The results are compared to similar work for dimethyl methylphosphonate, in which its volatility was suppressed beyond what was predicted by Raoult's law. The current work shows that the effect of humidity on TEPO volatility is nearly as predicted by Raoult's law, that is, vapor pressure suppression is proportional to ambient relative humidity. An empirical correlation taking into account nonideal behavior was developed to enable estimation of TEPO volatility at any combination of ambient temperature and humidity and compared to predications based on Raoult's law. These predictions may be used to support testing using TEPO with a variety of applications, including weapons effects and protective equipment.


Descriptors :   chemical warfare agents , volatility , liquid phases , experimental data , water vapor , measurement , dew point , flow rate , vapor pressure , vapor phases , saturation , thermodynamics , HUMIDITY , DEW POINT , chemical compounds


Subject Categories : Thermodynamics
      Physical Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE