Temporal Stability of Oxidizer Solutions: A Survey of Candidate Decon Materials in Seawater
NAVAL RESEARCH LAB WASHINGTON DC
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Aqueous solutions 0.1 N or less of various potential decon agents were examined for long term stability in seawater at 6 C, 23 C, and 70 C. The following compounds were tested the hypochlorite salts of sodium, calcium, and lithium sodium dichloroisocyanuarate the peroxygen compounds sodium perborate, sodium peroxydisulfate, hydrogen peroxide, and magnesium monoperoxyphthalate. The inorganic hypochlorite solutions were stable for up to 4 days at 6 and 20 C. The solutions were unstable at 70 C, deteriorating markedly in as little as 12 hours. The isocyanurate solutions were stable at low and ambient temperatures, but decomposed within 3-4 hours at 70 C. The perborate and peroxide solutions showed stability at all temperatures for up to 24 hours. The peroxydisulfate solutions decomposed rapidly at 70 C, and the magnesium monoperoxyphtalate solutions were unstable at all temperatures, decomposing within 0.5 hours. These solution stability data, monitored by iodometric titrimetry, provide information on the long term stability of potential decontamination fluids formulated with seawater. These data are of importance, should one or more of the examined candidates prove efficacious for decontamination applications. Keywords Oxidizer Seawater Stability Titration Iodometry.
- Physical Chemistry
- Physical and Dynamic Oceanography