Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

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Additional information

Releases of perfluoromethylmorpholine for all proposed uses are to the atmosphere. The substance is of very low water solubility, is volatile, and has a high experimental Henry's Law constant. Based on these qualities, it is expected to remain the atmospheric compartment upon release. No valid biodegradation study has been conducted of this substance. A category member (CAS# 1093615-61-2) tested in an OECD Guideline 310 study was found to be not readily biodegradable. None of the other category members tested showed signs of biodegradation in reliable closed bottle tests. Based on these test results and the fact that this molecule belongs to a category of chemicals which are not reactive toward biological molecules and cannot undergo bioactivation by normal enzymatic processes, biodegradation of perfluoromethylmorpholine is not expected. We have proposed adaptation of further test data (soil, sediment, or surface water simulation tests) as not being informative given the lack of ready biodegradation, volatility and lack of water solubility.