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Environmental fate & pathways

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Phototransformation in air: for the C16 Tetrabutane isomers, the calculated half-life in the atmosphere is less than 11 hours for the reaction with naturally occuring OH radicals.

Hydrolysis is not expected for Tetrabutane.

Biodegradation was tested in 1993 and 2018 (OECD310), results are in discussion with the evaluating MSCA. Under the tested conditions, readily biodegradation could not be demonstrated, but showed a good potential for biodegradation.

According to distribution model calculations the atmospheric oxidation is the relevant degradation pathway for C16 -Tetrabutane and persistence time for the worst case emission scenario (100% to water) is below the persistence criterium of 40 days for water.

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