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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Readily biodegradable: 82% (CO2 evolution) after 28 d (OECD 301B)

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

One GLP Guideline Study according to OECD 301B is available investigating the ready biodegradability of 1,3-butylene diacetate (CAS 1117-31-3) (Roulstone, 2012). Non-adapted activated sludge from a domestic sewage treatment plant was used as inoculum. The test substance, which was applied at a concentration of 18.1 mg/L was degraded to an extent of 82% (CO2 evolution) after 28 d fulfilling the 10 day window. Since the substance reached the pass level for OECD 301B (biodegradation is > 60% within 10-day window) 1,3-butylene diacetate is stated to be readily biodegradable according to the OECD criteria.