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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Tert-butyl peroxypivalate can be considered as not readily biodegradable. The degree of biodegradation reached 15 % in the prolonged bottle test (up to 71 days). 

Key value for chemical safety assessment

Biodegradation in water:
inherently biodegradable, not fulfilling specific criteria

Additional information

Tert-butyl peroxypivalate was tested for ready biodegradability in the closed bottle test according to OECD guideline 301 D. The test substance was tested using a stock solution of 1 g/litre. Activated sludge was used as inoculum. The test ran for 28 days and was prolonged up to 71 days. The test was valid as shown by an endogenous respiration of 0.3 mg/litre and the total mineralization of the reference compound, sodium acetate. As the degree of biodegradation reached 15% after 71 days, tert-butyl peroxypivalate can be considered as not readily biodegradable, but inherently biodegradable.