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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Using the weight of evidence approach, it is concluded that the chemical diiodohydroxyquinoline is readily bio-degradable in nature. This is supported by the following data furnished below:

According to the quantitative structure activity relationship model prediction, the substance diiodohydroxyquinoline shows 82.9 % degaradation in 28 days. Thus it can be estimated that the compound is readily biodegradable in water .

The substance diiodohydroxyquinoline is 50% biodegradable in water in 38 days (half-life). This value indicates that diiodohydroxyquinoline is readily biodegradable in water since the half life is less than the threshold criteria of >= 60 days (to qualify the chemical as persistent).

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The substance diiodohydroxyquinoline is 50% biodegradable in water in 38 days (half-life). This value indicates that diiodohydroxyquinoline is readily biodegradable in water since the half life is less than the threshold criteria of >= 60 days (to qualify the chemical as persistent).

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