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In accordance with REACH Annex VIII column 2, hydrolysis study does not need to be conducted because the registered substance,(-)-(3aR,5aS,9aS,9bR)-3a,6,6,9a-Tetramethyldodecahydronaphtho[2,1-b]furan,is readily biodegradable. In addition, the registered substance contains no organic functional groups that may hydrolyse under environmental condition like alkyl halides, amides, amines, epoxides, esters. This substance consists only of organic functional groups that are relatively or completely inert with respect of hydrolysis. Based on the chemical structure an estimation of the hydrolysis rate is not possible.

This statement is supported by one study on the registered substance, not performed according to international guideline and not GLP. In this study, the disappearance of the registered substance after 5 days as well as after 28 days is less than 10% at any pH (from 2 to 12) at 40°C. Therefore, it can be concluded that the substance is hydrolytically stable under the conditions of the test. The test item is, therefore, assumed to be hydrolytically stable under the study conditions of the OECD 111 test guideline at pH 4, 7 and 9.

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