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1.2.1.: Persistence

A substance fulfils the ‘very persistent’ criterion (vP) in any of the following situations:
(a) the degradation half-life in marine, fresh or estuarine water is higher than 60 days;
(b) the degradation half-life in marine, fresh or estuarine water sediment is higher than 180 days;
(c) the degradation half-life in soil is higher than 180 days.