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Environmental fate & pathways

Endpoint summary

Administrative data

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In general, abiotic degradation of Cyclohexane, oxidized, aq. ext. is negligible. Due to its readily biodegradability, hydrolysis is a moot point. There is no information available on the photodegradation of EP-306; however, modeling of known EP-306 components indicates half-lives ranging from 0.61 -20.6 days, with major components exhibiting half-lives of about 1 -2 days.

The main degradation mode of Cyclohexane, oxidized, aq. ext. is biodegradation. In a CO2 -Evolution test according to EU Method C.4-C, Cyclohexane, oxidized aq. ext. was degraded by 79% after 28 days, indicating the ready biodegradability of the test substance (BASF AG 1997). Due to the high mineralization, no further biodegradation testing (simulation tests in water and sediment, and biodegradation testing in soil) is required for registration under REACh. Accumulation to solid soil phase and bioaccumulation are not of importance (low log Pow and log Koc). Due to the miscibility with water, volatilization is negligible. There is no information available on the fugacity of EP-306; however, modeling was performed on the known components of EP-306 assuming 100% emission to water. Fugacity modeling of the components indicates that 98 -99.8% of emissions will remain in water.