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Environmental fate & pathways

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The substance is highly insoluble in water and thus hydrolysis of Dechlorane Plus cannot be sufficiently tested. In a screening study the rate of oxidation of Dechlorane Plus in water was estimated resulting in a first-order rate constant with 1/10000000000 / sec corresponding to an oxidation half-life in water of 2100 years. The method of estimation and calculation was not reported. Thus, it is assumed that the substance is stable to hydrolysis under environmental relevant conditions (pH 5 – 9). Findings of DP in the environment (see section 5.5) do support this assumption. Study results do indicate a potential for photodegradation in water but degradation rates seen were within the error margin of the study and thus can only be seen as indicative information.

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