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Issue 5, 2009
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Aluminium sulfate and sodium aluminate buffer solutions for the destruction of phosphorus based chemical warfare agents

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Abstract

Nerve agents VX and GB (sarin) are sequestered and removed by aluminium sulfate and sodium aluminate mixtures adjusted to pH 4 in solution. The products of hydrolysis are removed with the alum floc below NMR detection limits over time depending and the amount of aluminium molar excess relative to agent. Half-lives for GB decomposition are 3.1 h and 1.1 h, respectively, for a 120 and a 1200 molar excess. For VX, the half-lives are 8.5 d and 2.9 d for a 240 and a 5000 molar aluminium excess. In the case of GB, fluorine is sequestered as the hexafluoroaluminate ion. In the case of VX, no phosphorus containing hydrolysis products including the very toxic S-[2-(diisopropyl-amino)-ethyl]methylphosphonothiolate (EA-2192) are detected in the hydrolysate.

Graphical abstract: Aluminium sulfate and sodium aluminate buffer solutions for the destruction of phosphorus based chemical warfare agents

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Publication details

The article was received on 07 Nov 2008, accepted on 26 Jan 2009 and first published on 20 Feb 2009


Article type: Paper
DOI: 10.1039/B819885C
Citation: New J. Chem., 2009,33, 1006-1009
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    Aluminium sulfate and sodium aluminate buffer solutions for the destruction of phosphorus based chemical warfare agents

    D. J. Williams, W. R. Creasy, D. J. McGarvey, R. A. Fry, V. L. H. Bevilacqua and H. D. Durst, New J. Chem., 2009, 33, 1006
    DOI: 10.1039/B819885C

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