Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Bis(2-ethylhexyl) peroxydicarbonate undergoes immediate hydrolytical degradation upon dissolution in aqueous media. The hydrolytical half-life of bis(2-ethylhexyl)peroxydicarbonate is less than one hour. The main degradation product is 2-ethyl-1-hexanol (CAS No. 104-76-7).

Apart from its abiotic degradability bis(2-ethylhexyl)peroxydicarbonate is also readily biodegradable (97 % biodegradation after 28 days, but failing the 10-day window) under the test conditions of the modified Sturm test (OECD 301B).

Due to the rapid hydrolytic degradation the major breakdown product is the relevant molecule for the assessment of environmental properties including ecotoxicity and bioaccumulation potential. All degradation products including the major metabolite 2-ethyl-1-hexanol have a log Kow < 3. Therefore, bis(2-ethylhexyl) peroxydicarbonate including its breakdown products is not expected to accumulate in biota; a bioaccumulation study in fish is not required (see REACH Annex IX, endpoint 9.3.2 "Bioaccumulation in aquatic species, preferably fish", column 2).

Experimental data on the adsorption/desorption behaviour of bis(2-ethylhexyl)peroxydicarbonate are not available. New data do not need to be generated as the substance and its degradation products are readily biodegradable (see REACH Annex VIII, endpoint 9.3.1 "Adsorption/desorption screening", column 2, as well as REACH Annex IX, endpoint 9.3.3 "Further information on adsorption/desorption", column 2).

Further data regarding environmental fate and distribution of the substance are neither available nor required.