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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

No measured photodegradation data is available for 2 -(2 -butoxyethoxy)ethyl acetate The calculated Rate constant (for indirect photolysis via OH radicals) is : 35.2 E-12 cm³/(molecule*sec) with a resultant predicted atmospheric half life of 3.6 hours. An alternative calculation method led to a predicted rate constant of 32.7 E-12 cm3/(molecule*sec).

Degradation by hydrolysis at neutral pH is predicted to proceed at a negligible rate.

In a study which basically followed the methodology of a guideline closed bottle ready biodegradation study (OECD301D) and used non adapted sewage seed, 2 -(2-butoxyethoxy)ethyl acetate was found to be readily biodegradable, with 14% degradation after 5 days and 73% after 20 days. In a biodegradation study according to OECD 301C, for which only basic details are available, 2 -(2-butoxyethoxy)ethyl acetate showed 100% degradation within 7 days. The substance is readily biodegradable according to this information. A third ready biodegradation study is reported in a secondary source. This showed biodegradation of 67% in 20 days, which supports the results of the two studies described above. A number of inherent biodegradation studies are available, mainly to OECD302B. These all clearly show that 2 -(2-butoxyethoxy)ethyl acetate is biodegradable, with levels of degradation between 35% after 60 hours and 97 -100% after 6 -15 days consistently reported. Degradation proceeded at about 7.5% per day after a lag period of around 4 days. Further degradation studies in water and soil are not scientifically justified as the screening tests demonstrate that the substance is readily biodegradable.

This substance has a relatively low Logkow. The predicted BCF calculated from this is 1.99.

Distribution modelling suggests that environmental concentrations of 2 -(2-butoxyethoxy)ethyl acetate are likely to be very low. Based on a worse case assumption of all material being emitted to the environment with no abatement controls, water concentrations are predicted to be less than 50ug/l and air concentrations less than approximately 40ppt.