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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Two reliable studies for 2-methylbut-2-ene show  the substance not to be readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

Two reliable proprietary studies are available 2-methylbut-2-ene, both of which showed the substance as not readily biodegradable. The study by Huntingdon (2004), which is GLP compliant and follows OECD guideline 301D using non-adapted predominantly domestic sewage, showed 7 % biodegradation after 28 days. The study by ExxonMobil (2005), which is GLP compliant and follows OECD guideline 301F using non-adapted domestic activated sludge, showed no biodegradation after 28 days.