2-Chloroethyl sulfide simulant

Nanociystalline zeolites (ciystal sizes of less than 100 nm) are porous aluminosilicate nanomaterials with increased surface areas relative to conventional micron-sized zeolites. Nanocrystalline zeolites are potentially useful for CWA decontamination applications because of their enhanced absorptive and catalytic properties. This chapter describes FTIR and solid state NMR studies of the thermal reactivity of two CWA simulants, 2-CEES (2 chloroethyl sulfide) and DMMP (dimethylmethylphosphonate) on nanocrystalline zeohtes, such as NaZSM-5 (sihcalite, purely siliceous form of ZSM-5) and NaY, with crystal sizes of approximately 25 nm. 

Decontamination of chemical warfare agents (CWA s) is important not only for battlefield applications, but for cleanup as well. Some common CWA s are VX-((9-ethyl S -(2iisopropylamino)ethyl methylphosphonotioate), which is a nerve gas, and HD (mustard gas), which is a blistering agent. For much of the CWA decontamination research, CWA simulants which have similar chemical structures and properties as CWA s but are much less toxic, are used. In the work described here, DMMP (dimethylmethylphosphonate) and 2-CEES (2 chloroethyl sulfide) will be used as CWA simulants for VX and HD,... 

Reaction of the sandwich-type POM [(Fc(0H2)2)j(A-a-PW9034)2 9 with a colloidal suspension of silica/alumina nanopartides ((Si/A102)Cl) resulted in the production of a novel supported POM catalyst [146-148]. In this case, about 58 POM molecules per cationic silica/alumina nanoparticle were electrostatically stabilized on the surface. The aerobic oxidation of 2-chloroethyl ethyl sulfide (mustard simulant) to the corresponding harmless sulfoxide proceeded efficiently in the presence of the heterogeneous catalyst and the catalytic activity of the heterogeneous catalyst was much higher than that of the parent POM. In addition, this catalytic activity was much enhanced when binary cupric triflate and nitrate [Cu(OTf)2/Cu(N03)2 = 1.5] were also present [148],... 

The decontamination efficacy of radioprotective agent aminoethylisothiourea and cystamine on rat skin against SM was comparable to standard decontaminants, such as alco-holate, clay, and Fuller s earth (Knezevic and Tadic, 1996). A mixture containing bovine hemoglobin, gelatin, and poi (a Hawaiian foodstuff) on the hydrolytic kinetics of the mustard simulants, 2-chloroethyl ethyl sulfide, 2-chloro-ethyl methyl sulfide and 2-bromoethyl phenyl sulfide, is reported. The kinetic mechanisms and rate constants were dependent upon the mixtures concentration and viscosity (Cemy and Cemy, 1997). 

Figure 2 Pure rotational speetra for the ehemieal weapon simulants pinaeolone (A), pinaeolyl alcohol (B), 2-chloroethyl ethyl sulfide (C), and dimethyl methylphosphonate (D).

The third panel of Figure 2 shows the rotational spectrum of 2-chloroethyl ethyl sulfide (2CEES) a mustard gas simulant. The rotational constants and inertial projection of the permanent dipole moment have been previously reported and are reproduced in Table 1. The rotational spectrum of 2CEES is highly congested by the addition of the chlorine atom. The 2CEES spectrum is fragmented by the appearance of two nuclear... 

M. J. Tubergen, A. Lesarri, R. D. Suenram, A. C. Samuels, J. O. Jensen, M.W. EUzy, J. M. Lochner, Rotational spectra, nuclear quadrupole hypeifme tensors, and conformational structures of the mustard gas simulant 2-chloroethyl ethyl sulfide, J. Mol. Spec., 233, 180-188 (2005). 

The system was designed to validate the capability of the SILVER IF process to destroy chemical agents VX, GB (both are nerve agents), and HD (distilled mustard). It was also intended to demonstrate the effective destruction of agent simulants chloroethyl ethyl sulfide (CEES) and dimethyl methylphosphonate (DMMP) for comparison with results from the 12 kW system. 

The adsorption capacity of activated caibon fabrics that range in average pore size from less than 1 mn (micropoies) to more than 2 nm (mesopores) was recently pubhshed for a vesicant simulant (chloroethyl ethylsulfide or CEES) (7). These results show a direct correlation between the average pore size of the fabric and its specific surface area with its adsoption capacity for CEES from CEES/methoxyperfluorobutane (sold commercially as Novec HFE-7100 by 3M Co.) solutions. The results of comparable measurements with a military grade vesicant, dichloroethyl sulfide (chemical warfare agent HD), are presented and compared to those obtained with CEES in this paper. 

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