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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

The members of category are considered to be readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The members of category are gases and partition predominantly to the atmosphere, and so experimental data for their biodegradation in water are not appropriate. The potential biodegradation rates of representative members of the category were estimated using QSAR calculations. The results of the BioHCwin predictions indicate that these substances will degrade rapidly, with an estimated half-life of 2.5 to 3.5 days. The BIOWIN predictions indicate that methane, ethane, propane and butane are expected to be readily biodegradable, while isobutane is expected to biodegrade fast but is predicted to be not readily biodegradable.

Overall, based on the weight of evidence available, the members of the category are considered to be readily biodegradable.