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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Description of key information

The substance diiodohydroxyquinoline is 50% biodegradable in water and sediment in 38 days and in 340 days respectively. This values indicates

that diiodohydroxyquinoline is  readily biodegradable in water while is not readily biodegradable in sediment according to the EPA criteria of >= 60 days (to qualify the chemical as persistent).

Key value for chemical safety assessment

Half-life in freshwater:
38 d
Half-life in freshwater sediment:
340 d

Additional information

The substance diiodohydroxyquinoline is 50% biodegradable in water and sediment in 38 days and in 340 days respectively. This values indicates that diiodohydroxyquinoline is readily biodegradable in water while is not readily biodegradable in sediment according to the EPA criteria of >= 60 days (to qualify the chemical as persistent).

Hence, it can be concluded that the substance diiodohydroxyquinoline is not persistent in water while it is persistant in sediment.