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Environmental fate & pathways

Endpoint summary

Administrative data

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One biodegradation study was available for cyclopentane and this showed the substance to be not readily biodegradable. The study (ExxonMobil Chemical-177194A 2004) is a GLP-compliant, OECD 301F guideline test which showed that cyclopentane was found to undergo 0% biodegradation in water after 28. The test fulfilled the validity criteria and was considered reliable without restriction and suitable as a study for this endpoint.

The substance is expected to have a low potential for bioaccumulation and adsorption to soil and sediment based on the measured log Kow of 3 (Lide 2008). Structural analysis of cyclopentane indicates that it is not expected to undergo hydrolysis in the environment due to the lack of hydrolysable functional groups. The physico-chemical properties of cyclopentane indicate that the majority of the substance will ultimately be distributed to the atmosphere where it is quickly photooxidised. The photooxidative half life for cyclopentane is 3.2 days (Droege and Tully 1987).

Cyclopentane is expected to persist in the environment because it is not readily biodegradable, though it has a low potential for adsorption to organic matter and low potential for bioaccumulation.