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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toluene is biodegradable in several standard biodegradability tests using sewage sludge inocula (Price et al., 1974; Bridie et al., 1979). The degradation rate is faster when adapted microorganisms are used.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Although the studies available do not follow current standard guidelines they are sufficient to demonstrate that toluene is readily biodegraded by both non-adapted and adapted sewage sludge inocula. These two studies were also used as part of a weight of evidence that toluene is readily biodegradable in the EU RAR for toluene (2003).