Registration Dossier

Environmental fate & pathways

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The ready biodegradability of 1,3-bis[1-(tert-butylperoxy)-1-methylethyl]benzene was evaluated in a study performed in accordance with OECD testing guideline 301 D and GLP requirements. As no biodegradation was observed at day 28, the peroxide should not be classified as readily biodegradable.

Based upon the adsorption potential of the substance of interest, sediment and water compartment exposition is likely. A study was thus conducted to determine the biodegradation of structurally analogous [1,3(or 1,4)-phenylenebis(1-methylethylidene)]bis[1,1-dimethylethyl] peroxide in water/sediment simulation test, according to US EPA guideline. The half-life in sediment/water compartment under anaerobic conditions was determined as 29 days.

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